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Discuss these studies using the Magpulse Bulletin Board.

Scientific Studies

This is a list of published scientific papers showing the possible effectiveness
of Pulsed Magnets.

Experimental studies on extremely low frequency pulsed magnetic field inhibiting sarcoma and enhancing cellular immune functions.

Weak, but complex pulsed magnetic fields may reduce depression following traumatic brain injury.

Chemotherapy of human carcinoma xenografts during pulsed magnetic field exposure.

Effect of pulsed magnetic fields on human umbilical endothelial vein cells.

Effects of pulsed Extremely-Low-Frequency magnetic fields on skin wounds in the rat.

Pulsed electro-magnetic field therapy of persistant rotator cuff tendonitis, a double-blind controlled assessment

Stimulation of nerves and muscles using large pulsed magnetic fields

Lymphoma development among mice exposed to X-rays and pulsed magnetic fields

Spinal reflex evoked by a pair of opposing pulsed magnetic fields

An increase in the negative surface charge of U937 cells exposed to a pulsed magnetic field

Focal stimulation of the human brain by a pair of opposing pulsed magnetic field

Influence of magnetic fields on calcium salts crystal formation: an explanation of the 'pulsed electromagnetic field technique for bone healing

Localized stimulation of the human brain and spinal cord by a pair of opposing pulsed magnetic fields

Localized stimulation of the Human Brain by a pair of opposing pulsed magnetic fields

The use of a pulsed traveling magnetic field in patients with chronic obstructive bronchitis

The use of a pulsed magnetic field in the treatment of lupus erythematosus

Effects of pulsed magnetic fields in the therapy of osteoporosis induced by ovariectomy in the rat.

Possible therapeutic applications of pulsed magnetic fields

Therapeutic effects of pulsed magnetic fields on joint diseases.

Effects of low-amplitude pulsed magnetic fields on cellular ion transport.

The Canadian experience with pulsed magnetic fields in the treatment of ununited tibial fractures.

Pulsed magnetic field therapy for tibial non-union [letter]

Pulsed magnetic field therapy for tibial non-union.


Experimental studies on extremely low frequency pulsed magnetic field inhibiting sarcoma and enhancing cellular immune functions.

- BIO 99-70 99-803140 Du, Bi.
JOURNAL NAME- Science in China Series C Life Sciences VOL. 40 NO. 4 1997 PP. 392-397 ISSN- 1006-9305 AUTHOR AFFILIATION- Biomed. Physics Unit, Dep. Physics, Wuhan Univ., Wuhan 430072, China CORPORATE AUTHOR- Zhang Husheng; Ye Hui; Zhang Chuanqing; Zeng Fanqing; Huang Xingding; Zhang Qingchuan; Li Zhongshan LITERARY INDICATOR(S)- RESEARCH ARTICLE PRINT PRODUCT NUMBER- Biological Abstracts Vol. 104 Iss. 011 Ref. 160744 LANGUAGE- English

The previous observation with an electron microscope showed that extremely low frequency (ELF) pulsed magnetic field (PMF) (with the maximum intensity of 0.6-2.0 T, gradient of 10-100 T cntdot M-1, pulse width of 20-200 ms and frequency of 0.16-1.34 Hz) inhibited the growth of S-180 sarcoma in mice and enhanced the ability of immune cell's dissolving sarcoma cells. In this study, the DNA contents of nuclei were assayed by using Fautgen Staining method. With an electron microscope and cell stereoscopy technology it was observed that magnetic field affected the sarcoma cell' s metabolism, lowered its malignancy, and restrained its rapid and heteromorphic growth. The magnetic field enhanced the cellular immune ability and the reaction of lymphocytes and plasma. Since ELF pulsed magnetic fields can inhibit the growth of sarcomas and enhance the cellular immune ability, it is possible to use it as a new method to treat cancer.

DESCRIPTOR(S)- * CELLULAR IMMUNE FUNCTIONS; *ENHANCEMENT; *EXPERIMENTAL STUDIES; *EXTREMELY LOW FREQUENCY PULSED MAGNETIC FIELD; *IMMUNE EFFECTS; *INHIBITION; *METHODOLOGY; *MOUSE; *NEOPLASTIC DISEASE; *SARCOMA; * THERAPEUTIC METHOD; *TUMOR BIOLOGY BIOSIS Concept Code(s)- 02506; 12512; 24003; 24008; 34508 BIOSYSTEMATIC CODES- 86375

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Weak, but complex pulsed magnetic fields may reduce depression following traumatic brain injury.
- BIO 99-22 99-249908
Baker-Price, L. A.; Persinger, M. A.

JOURNAL NAME- Perceptual and Motor Skills VOL. 83 NO. 2 1996 PP.
491-498 ISSN- 0031-5125 AUTHOR AFFILIATION- Clinical Neuropsychol.
Lab., Dep. Psychol., Laurentian Univ., Ramsey Lake Rd., Sudbury, ON P3E
2C6, Canada LITERARY INDICATOR(S)- RESEARCH ARTICLE PRINT PRODUCT
NUMBER- Biological Abstracts Vol. 102 Iss. 011 Ref. 165538 LANGUAGE-
English

Many patients who display psychological depression following a traumaticbrain injury do not respond completely to antidepressant drugs, Wehypothesized that this type of depression is strongly correlated withsubclinical, complex partial seizure-activity within the hippocampal-amyg-daloid region that continues for months to years after apparent
neurological and behavioral "recovery." Four depressed patients who hadsustained traumatic brain injuries and who exhibited mild to moderatebrain impairment according to standardized tests received 30 min. of weak(1 mu-T) burst-firing magnetic fields across the temporal lobes once perweek for 5 weeks. There was a significant improvement of depression andreduction of phobias while physical symptoms and other complaints were notchanged.

DESCRIPTOR(S)- *BEHAVIORAL AND MENTAL DISORDERS; *HIPPOCAMPAL-AMYGDALOID
AREA; *HUMAN; *INJURY; *NERVOUS SYSTEM DISEASE; *NEUROLOGY; *PATIENT;
*PSYCHIATRY; *PSYCHOSOCIAL DEPRESSION; *TEMPORAL LOBE; * THERAPEUTIC
METHOD; *TRAUMATIC BRAIN INJURY; *WEAK COMPLEX PULSED MAGNETIC FIELDS
BIOSIS Concept Code(s)- 10610; 12512; 20506; 21002 BIOSYSTEMATIC
CODES- 86215.

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Chemotherapy of human carcinoma xenografts during pulsed magnetic field exposure.
- BIO 98-06 98-052211 5

Hannan, C. J., Jr; Liang, Y.; Allison, J. D.; Pantazis, C. G.; Searle, J. R.
JOURNAL NAME- Anticancer Research VOL. 14 NO. 4A 1994 PP.
1521-1524 ISSN- 0250-7005 AUTHOR AFFILIATION- Radiol. Dep., Med. Coll.
Ga., Augusta, GA 30912, USA LITERARY INDICATOR(S)- RESEARCH ARTICLE
PRINT PRODUCT NUMBER- Biological Abstracts Vol. 099 Iss. 003 Ref. 036755
LANGUAGE- English

Immune deficient mice growing xenografts of HT-29 or A-431 cell lines were treated with cisplatin, carboplatin or doxorubicin in combination with one hour of wholebody pulsed magnetic field (PMF) exposure (calculated peak field 5.2 m Tesla, with an averagefield strength of 0.525 m Tesla-rms; pulses rose for 120 mu-sec and then abruptly fell to neutral, and were repeated at a rate of 250 pulses per second). At 24 days, the mice in each experiment were found to have significantly (p lt 0.05, ANOVA) different tumor sizes among groups. The smallest mean tumor volume was consistently found in the drug+PWF group. With A431 tumors, the cisplatin + PMF group (T) was significantly smaller, 52% (1-(100T/C)), than the cisplatin alone group (C). In HT-29 tumors, those treated with carboplatin + PMF had the smallest tumor volume at just 34% of the carboplatin-alone group. In HT-29
tumors, the doxorubicin + PMF group was 35% of the doxorubicin alone group.

DESCRIPTOR(S)- *ANTINEOPLASTIC-DRUG; *CARBOPLATIN; *CISPLATIN;
*DOXORUBICIN; *MOUSE; * THERAPEUTIC METHOD BIOSIS Concept Code(s)-
10606; 11104; 11107; 22005; 24004; 24008 BIOSYSTEMATIC CODES-
86215; 86375 Secondary Concept Code(s)- 10060; 12512.

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Effect of pulsed magnetic fields on human umbilical endothelial vein cells 

BIO 97-05 97-042417 1

Goodman, E. M.; Greenebaum, B.; Frederiksen, J.
JOURNAL NAME- Bioelectrochemistry and Bioenergetics VOL. 32 NO. 2
1993 PP. 125-132 ISSN- 0302-4598 AUTHOR AFFILIATION- Biomedical
Res. Inst., Univ. Wisconsin-Parkside, Kenosha, WI 53141, USA LITERARY
INDICATOR(S)- RESEARCH ARTICLE PRINT PRODUCT NUMBER- Biological
Abstracts Vol. 097 Iss. 003 Ref. 026717 LANGUAGE- English

The long-term goal of this program was to examine the efficacy of weakelectromagnetic fields as an adjunct therapy to facilitate wound repair.The experiments reported here were directed to the question of whetherpulsed magnetic fields (PMFs) could facilitate endothelial cell migrationfollowing induction of a wound. These studies were based on a report thatweak PMFs facilitated cell migration in a wounded confluent monolayerculture of human umbilical vein cells. Experiments reported in this paperwere an attempt to reproduce and extend these observations. Our data
support the original observations. Further, we examined severalhypotheses in an attempt to clarify the mechanism of interaction betweenthe applied electromagnetic fields and cells. The data do not support thehypothesis that PMFs are acting in a manner analogous to endothelial cellgrowth factor, a normal component of the growth medium, or that PMFsapplied at the time of cell transfer enhance DNA replication. We havefound that PMFs are more effective in accelerating migration if theyinduce an electric field that is perpendicular rather than parallel tothe sides of the wound.

DESCRIPTOR(S)- *CELL MIGRATION; * THERAPY PLANNING; *WOUND REPAIR
BIOSIS Concept Code(s)- 02508; 11107; 12512; 14508 BIOSYSTEMATIC

CODES- 86215 Secondary Concept Code(s)- 10610; 12100.

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EFFECTS OF PULSED EXTREMELY-LOW-FREQUENCY MAGNETIC FIELDS ON SKIN 
WOUNDS IN THE RAT -
BO1 BA 85-00 BA 85-090642
OTTANI, V.; DE PASQUALE, V.; GOVONI, P.; FRANCHI, M.; ZANIOL, P.;
RUGGERI, A.

ABBREVIATED JOURNAL TITLE- BIOELECTROMAGNETICS VOL. 9 NO. 1 1988
53-62 page(s) CODEN- BLCTD AUTHOR AFFILIATION- IST. ANAT. UMANA
NORMALE, VIA IRNERIO 48, 40126 BOLOGNA, ITALY. SUBFILE- BA (Biological
Abstracts) LANGUAGE- English
NO-ABSTRACT
DESCRIPTOR(S)- *BACK; * CELLULAR ; *COLLAGEN; *MATURATION; *NETWORK;
*NEW; *ORGANIZATION; *VASCULAR BIOSIS Concept Code(s)- 06506; 10610;
11107; 14504; 18506; 25508 BIOSYSTEMATIC CODES- 86375 Secondary
Concept Code(s)- 06504; 11104; 11310.

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PULSED ELECTRO MAGNETIC FIELD THERAPY OF PERSISTENT ROTATOR CUFF 
TENDINITIS A DOUBLE-BLIND CONTROLLED ASSESSMENT- BO1 BA 78-00 BA
78-032801 8

BINDER, A.; PARR, G.; HAZLEMAN, B.; FITTON-JACKSON, S.
ABBREVIATED JOURNAL TITLE- LANCET VOL. 1 NO. 8379 1984 695-698
page(s) CODEN- LANCA AUTHOR AFFILIATION- DEP. RHEUMATOL.,
ADDENBROOKE'S HOSP., CAMBRIDGE, CB2 2QQ. SUBFILE- BA (Biological
Abstracts) LANGUAGE- English

NO-ABSTRACT

DESCRIPTOR(S)- *CHRONIC; *HUMAN; *LESION; *STEROID; *TENDON;
* THERAPY BIOSIS Concept Code(s)- 17506; 18006 BIOSYSTEMATIC CODES-
86215 Secondary Concept Code(s)- 10057; 10067; 10610; 12504; 12508;
17501; 18001.

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BIOCHEMICAL ASPECTS OF THE BIOLOGICAL EFFECT OF LOW FREQUENCY PULSED
ELECTRO MAGNETIC FIELD

- BO2 BA 55-00 BA 55-020742
KOLODUB, F. A.; EVTUSHENKO, G. I.
ABBREVIATED JOURNAL TITLE- GIG TR PROF ZABOL VOL. 16 NO. 6 1972
13-17 page(s) CODEN- GTPZA SUBFILE- BA (Biological Abstracts)
NO-ABSTRACT

DESCRIPTOR(S)- *RAT BIOSIS Concept Code(s)- 10060; 10502; 10610;
12002; 13002; 13003; 13004; 13012 BIOSYSTEMATIC CODES- 86375

Secondary Concept Code(s)- 10062; 10064; 10068; 10510; 13014; 14004;
14504; 17504; 20504.

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Excitation of frog sciatic nerve using pulsed magnetic fields effect of waveform variations 

- INS 97-39 5709110 A9721-8730-021
(PHA) 0

Alkhateeb, A.; Gaumond, R. P.

ABBREVIATED JOURNAL TITLE- 1995 IEEE Engineering in Medicine and Biology
17th Annual Conference and 21 Canadian Medical and Biological Engineering
Conference (Cat. No.95CH35746) PART NUMBER- vol.2 1997 PP. 1119-20
vol.2 2 vol. ixviii+1738 page(s) 3 reference(s) DOCUMENT TYPE-
Conference paper ISBN- 0 7803 2475 7 CORPORATE AUTHOR- Dept. of
Bioeng., Penn State Univ., University Park, PA, USA COPYRIGHT OF
BIBLIOGRAPHIC- Copyright 1997, IEE COPYRIGHT CLEARANCE CENTER CODE- 0
7803 2475 7/97/$10.00 PUBLISHER- IEEE PUBLICATION PLACE- New York,
NY, USA PUBLICATION COUNTRY- USA CONFERENCE DATE- 20-23 Sept. 1995
CONFERENCE TITLE- Proceedings of 17th International Conference of the

Engineering in Medicine and Biology Society CONFERENCE LOCATION-
Montreal, Que., Canada LANGUAGE- English (DEF)
We examined the relative effectiveness of overdamped and of (truncated)underdamped magnetic field pulses in exciting frog sciatic nerve.Waveforms were compared by finding the stimulus magnitude (Vh)corresponding to half-maximal tension developed in gastroenemius muscle.Vh varied inversely with T/sub 0/ the time to peak of the magnetic field.

DESCRIPTOR(S)- biological effects of fields; biomagnetism; muscle;
neurophysiology; zoology IDENTIFIER(S)- frog sciatic nerve excitation;
gastroenemius muscle; half-maximal tension; magnetic induction;
overdamped magnetic field pulses; pulsed magnetic fields; stimulus
magnitude; time to peak; truncated underdamped magnetic field pulses;
waveform variations TREATMENT CODE- TC-X SECTIONAL CLASSIFICATION
CODE- A8730E; A8740; A8750; A8760D.

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Stimulation of nerves and muscles using large pulsed magnetic fields 

- INS 95-49 5139121 A9602-8760D-003 (PHA)
Barker, A. T.

ABBREVIATED JOURNAL TITLE- IEE Colloquium on 'Magnets in Medicine -
Hazards and Health Care' (Digest No.1995/164) 1995 PP. 1/1-3 24
page(s) 3 reference(s) DOCUMENT TYPE- Conference paper CORPORATE
AUTHOR- Dept. of Med. Phys. & Clinical Eng., R. Hallamshire Hospital,
Sheffield, UK SPONSORING AGENCY- IEE COPYRIGHT OF BIBLIOGRAPHIC-
Copyright 1995, IEE PUBLISHER- IEE PUBLICATION PLACE- London, UK
PUBLICATION COUNTRY- UK CONFERENCE DATE- 9 Oct. 1995 CONFERENCE
TITLE- IEE Colloquium on 'Magnets in Medicine - Hazards and Health Care'
(Digest No.1995/164) CONFERENCE LOCATION- London, UK LANGUAGE-
English (DEF)

It has been known since the work of Galvani and Volta in the 1790s thatnerves and muscles can be electrically stimulated. The technique ofelectrical stimulation, using either needle or surface electrodes toinject current into the tissue, is today widely used in medicine both fordiagnostic purposes and for other applications such as cardiac pacing,defibrillation of the heart and to aid gait. It does, however, have somedisadvantages and limitations, in particular the need to use needleelectrodes to stimulate deep nerves, its relative inability to stimulatestructures surrounded by bone such as the human brain and the discomfortit causes. Over 2000 magnetic stimulators are now in use world-wide forboth clinical and research applications. The technique has becomeestablished as a diagnostic tool in neurology and the recent emergence ofa number of potential therapeutic applications suggests that the use of
magnetic stimulation in medicine is likely to grow.

DESCRIPTOR(S)- biological effects of fields; muscle; neurophysiology;
patient diagnosis; radiation therapy ; reviews IDENTIFIER(S)-
clinical applications; diagnostic tool; large pulsed magnetic fields;
magnetic stimulation; magnetic stimulators; muscle stimulation; nerve
stimulation; neurology; research applications TREATMENT CODE- TC-G
SECTIONAL CLASSIFICATION CODE- A8760D; A8730; A0130R; A8740; A8770E;
A8770H.

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Lymphoma development among mice exposed to X-rays and pulsed magnetic fields
 

- INS 93-43 4515653 A9324-8750G-007 (PHA)
Svedenstal, B.-M.; Holmberg, B.
JOURNAL NAME- International Journal of Radiation Biology ABBREVIATED
JOURNAL TITLE- Int. J. Radiat. Biol. (UK) VOL. 64 NO. 1 July 1993
PP. 119-25 21 reference(s) DOCUMENT TYPE- Journal paper ISSN-
0020-7616 CODEN- IJRBA3 CORPORATE AUTHOR- Dept. of Radioecology,
Swedish Univ. of Agric. Sci., Uppsala, Sweden COPYRIGHT CLEARANCE
CENTER CODE- 0020-7616/93/$10.00 PUBLICATION COUNTRY- UK LANGUAGE-
English (DEF)

CBA mice were exposed to a total of 5.24 Gy X-rays (260 kV, 11 mA, 0.45Gy/min) divided into four exposures, and to saw-tooth 15 mu T (peak topeak) pulsed vertical 20 kHz magnetic fields for their life-time. Inparallel, series with magnetic fields only or non-exposed animals wererun. The animals were observed for their life-time. The frequency oflymphomas was 65.7% in the X-ray group and 71.4% in the groups exposed toboth X-ray and magnetic field. Of the non-exposed control animals, and ofthe exposed to magnetic fields only 6.4 and 5.7% had lymphomas,
respectively. There were no statistically significant differences betweenthe magnetic field series and the corresponding controls for lymphomas.Blood cell counts and haemoglobin data did not show differences between
the X-irradiated, and X-ray and magnetic field-exposed groups.Mononuclear cells and total leukocytes were elevated for pulsed magneticfields-exposed animals compared with the non-exposed controls. Thisdifference was due to two animals with extreme values. In the pulsedmagnetic fields treated group there was a statistically significantincrease of the carcass weight compared with the non-treated controlgroup.

DESCRIPTOR(S)- biological effects of fields; biological effects of
X-rays; biomagnetism; blood; cellular effects of radiation;
magnetic field effects IDENTIFIER(S)- blood cell counts; carcass
weight; haemoglobin; lymphoma development; mononuclear cells; pulsed
magnetic fields; radiation biology ; total leukocytes; CBA mice;
X-ray exposure; 11 mA; 15 muT; 20 kHz; 260 kV NUMERICAL DATA
INDEXING- voltage 2.6E+05 V; current 1.1E-02 A; magnetic flux density
1.5E-05 T; frequency 2.0E+04 Hz TREATMENT CODE- TC-X SECTIONAL
CLASSIFICATION CODE- A8750G; A8725; A8750; A8740.

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Spinal reflex evoked by a pair of opposing pulsed magnetic fields -

INS 91-19 3961194 A91118579 (PHA) 0 Ueno, S.; Hiwaki, O.
JOURNAL NAME- Journal of Applied Physics ABBREVIATED JOURNAL TITLE- J.
Appl. Phys. (USA) pt.2B VOL. 69 NO. 8 15 April 1991 PP. 6019-21
17 reference(s) DOCUMENT TYPE- Conference paper ISSN- 0021-8979
CODEN- JAPIAU CORPORATE AUTHOR- Dept. of Electron., Kyushu Univ.,
Fukuoka, Japan SPONSORING AGENCY- AIP; IEEE; et al COPYRIGHT
CLEARANCE CENTER CODE- 0021-8979/91/086019-03$03.00 PUBLICATION
COUNTRY- USA CONFERENCE DATE- 29 Oct.-1 Nov. 1990 CONFERENCE TITLE-
Thirty-Fifth IEEE Conference on Magnetism and Magnetic Materials
CONFERENCE LOCATION- San Diego, CA, USA LANGUAGE- English (DEF)

A noninvasive method of magnetic stimulation of the spinal roots wasdesigned. The basic idea is to concentrate induced eddy currents in atarget by a pair of opposing pulsed magnetic fields. A figure-eight coil
was positioned outside the median of the back so that time varyingmagnetic fields pass through the body in opposite directions around thetarget. Magnetic stimulation of the spinal roots of human and a rabbitwas carried out. It was found that each spine level can be stimulatedselectively, producing electromyographic waves related to both the
H-reflex and M-wave. The results indicate that the M-wave can be producedby currents flowing either in the rostral or caudal direction, whereasthe H-reflex is only generated by currents flowing in the caudaldirection. The H-reflex elicited by magnetic stimulation of nerves in thevicinity of the spine becomes a new tool in diagnosis of neuromuscularsystem diseases.
DESCRIPTOR(S)- bioelectric phenomena; biological effects of fields;
biomagnetism; magnetic field effects; neurophysiology IDENTIFIER(S)-
caudal direction; concentrate induced eddy currents; electromyographic
waves; figure-eight coil; human; magnetic stimulation; neuromuscular
system diseases; noninvasive method; opposing pulsed magnetic fields;
rabbit; rostral; spinal reflex; spinal roots; spine level; time
varying magnetic fields; H-reflex; M-wave TREATMENT CODE- TC-X
SECTIONAL CLASSIFICATION CODE- A8740; A8728; A8750; A8730C.

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An increase in the negative surface charge of U937 cells exposed to a pulsed magnetic field
 

- INS 91-16 3929295 A91099541 (PHA)
Smith, O. M.; Goodman, E. M.; Greenebaum, B.; Tipnis, P.
JOURNAL NAME- Bioelectromagnetics ABBREVIATED JOURNAL TITLE-
Bioelectromagnetics (USA) VOL. 12 NO. 3 1991 PP. 197-202 16
reference(s) DOCUMENT TYPE- Journal paper ISSN- 0197-8462 CODEN-
BLCTDO CORPORATE AUTHOR- Biomed. Res. Inst., Wisconsin Univ., Parkside,
Kenosha, WI, USA PUBLICATION COUNTRY- USA LANGUAGE- English (DEF)

Pulsed magnetic fields have been used to enhance healing of bonefractures and purportedly of lesions in soft tissue. However, theirmechanism of action is poorly understood. The authors report changes inthe plasma membrane of a nonadherent mammalian cell line, U937, which wasexposed to a 25-pps magnetic field for 48 hours. Aqueous polymertwo-phase partition studies showed that magnetic-field-exposed cellsexhibited an increased negative surface charge but membranehydrophobicity was not significantly altered. The observed increase inmembrane electronegativity of exposed cells did not reflect a significantchange in growth rate.

DESCRIPTOR(S)- bioelectric phenomena; biological effects of fields;
biomagnetism; biomembranes; cellular effects of radiation; magnetic
field effects IDENTIFIER(S)- aqueous polymer 2-phase partition studies;
bone fracture healing; membrane electronegativity; membrane
hydrophobicity; negative surface charge; nonadherent mammalian cell
line; plasma membrane; pulsed magnetic field; soft tissue lesions;
U937 cells; 48 hr NUMERICAL DATA INDEXING- time 1.7E+05 s TREATMENT
CODE- TC-X SECTIONAL CLASSIFICATION CODE- A8728; A8725F; A8740;
A8750; A8720E.

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Focal stimulation of the human brain by a pair of opposing pulsed magnetic field

- INS 91-07 3840711 A91044735 (PHA)
Ueno, S.; Matsuda, T.; Fujiki, M.
JOURNAL NAME- International Journal of Applied Electromagnetics in
Materials ABBREVIATED JOURNAL TITLE- Int. J. Appl. Electromagn. Mater.
(Netherlands) VOL. 1 NO. 2-4 Dec. 1990 PP. 167-72 18
reference(s) DOCUMENT TYPE- Journal paper ISSN- 0925-2096 CORPORATE
AUTHOR- Dept. of Electron., Kyushu Univ., Fukuoka, Japan COPYRIGHT
CLEARANCE CENTER CODE- 0925-2096/90/$03.50 PUBLICATION COUNTRY-
Netherlands LANGUAGE- English (DEF)

A method of localized stimulation of the human brain is proposed. The basic idea is to concentrate induced eddy currents locally in the vicinity of a target by a pair of opposing pulsed magnetic fields. A pair of coils are positioned outside the head so that time-varying magnetic fields pass through the head in the opposite directions around a target. The eddy currents induced at the target are expected to flow together, which results in an increased current flow at the target. The current density at the target makes a peak which is higher by 2-3 times than current densities at non-target regions. Based upon the computer simulation, a figure eight coil was designed, and the magnetic brain stimulation was carried out using the authors as volunteers. The results showed that the selective stimulation of the brain was achieved within a 5 mm resolution. The functional mapping of the human motor cortex related to the hand, arm and foot area was obtained. It was also observed that the optimum direction of stimulating currents for neural excitation exists in each functional area in the cortex. The localization of the target area was confirmed by magnetic resonance imaging.

DESCRIPTOR(S)- biological effects of fields; biomagnetism; brain;
eddy currents; neurophysiology IDENTIFIER(S)- arm; computer
simulation; current density; figure eight coil; focal stimulation;
foot area; functional mapping; hand; human brain; human motor cortex;
induced eddy currents; localized stimulation; magnetic resonance
imaging; neural excitation; opposing pulsed magnetic field; pair of
coils; target; time-varying magnetic fields; 5 mm resolution
TREATMENT CODE- TC-X SECTIONAL CLASSIFICATION CODE- A8740; A8750;
A8760D; A8730.

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Influence of magnetic fields on calcium salts crystal formation:
an explanation of the pulsed electromagnetic field' technique for bone healing 

INS 90-04 3725881 A90134680 (PHA)
Madronero, A.

JOURNAL NAME- Journal of Biomedical Engineering ABBREVIATED JOURNAL
TITLE- J. Biomed. Eng. (UK) VOL. 12 NO. 5 Sept. 1990 PP. 410-14
28 reference(s) DOCUMENT TYPE- Journal paper ISSN- 0141-5425 CODEN-
JBIEDR CORPORATE AUTHOR- CENIM, Madrid, Spain COPYRIGHT CLEARANCE
CENTER CODE- 0141-5425/90/050410-05$3.00 PUBLICATION COUNTRY- UK
LANGUAGE- English (DEF)

In the search for a mechanism by means of which a magnetic field deparalyses non-unions and enhances bone tissue formation, the influence of continuous magnetic fields on the formation of calcium phosphatecrystal seeds has been investigated. From this perspective, an explanation is given of a working mode in conventional equipment for pulsed electromagnetic field treatment; this is compared with multifunction equipment.

DESCRIPTOR(S)- biological effects of fields; biomagnetism; bone;
magnetic field effects IDENTIFIER(S)- bone healing; crystal formation;
multifunction equipment; pulsed EM field technique; Ca/sub 3/(PO/sub
4/)/sub 2/; Ca/sub 5/OH(PO/sub 4/)/sub 3/ CHEMICAL INDEXING- Ca3PO4/ss
Ca3/ss PO4/ss Ca/ss O4/ss O/ss P/ss; Ca5OHPO4/ss Ca5/ss PO4/ss Ca/ss
O4/ss OH/ss H/ss O/ss P/ss TREATMENT CODE- TC-X SECTIONAL
CLASSIFICATION CODE- A8750; A8740.

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Localized stimulation of the human brain and spinal cord by a pair 
of opposing pulsed magnetic fields

INS 90-04 3712322 A90120808 (PHA); B90066143 (EEA) 9 Ueno, S.; Matsuda, T.; Hiwaki, O.

JOURNAL NAME- Journal of Applied Physics ABBREVIATED JOURNAL TITLE- J.
Appl. Phys. (USA) pt.2B VOL. 67 NO. 9 1 May 1990 PP. 5838-40
10 reference(s) DOCUMENT TYPE- Conference paper ISSN- 0021-8979
CODEN- JAPIAU CORPORATE AUTHOR- Dept. of Electron., Kyushu Univ.,
Fukuoka, Japan SPONSORING AGENCY- AIP; IEEE COPYRIGHT CLEARANCE
CENTER CODE- 0021-8979/90/095838-03$03.00 PUBLICATION COUNTRY- USA
CONFERENCE DATE- 28 Nov.-1 Dec. 1989 CONFERENCE TITLE- Thirty-Fourth
Annual Conference on Magnetism and Magnetic Materials CONFERENCE
LOCATION- Boston, MA, USA LANGUAGE- English (DEF)

A method of localized stimulation of the human brain and spinal cord isproposed. The basic idea is to concentrate induced eddy currents locallyin the vicinity of a target by a pair of opposing pulsed magnetic fields.A pair of coils are positioned outside the head in the oppositedirections around a target. The eddy currents induced at the target are
expected to flow together, which results in an increased current flow atthe target. A figure-eight coil is designed, and the magnetic brainstimulation is carried out using ourselves as volunteers. The resultsshow that the selective stimulation of the brain is realized with a 5-mmresolution. The functional mapping of the human motor cortex related tothe hand, arm, and foot areas is obtained. It is also obtained that anoptimum direction of stimulating currents for neural excitation exists ineach functional area in the cortex. Magnetic stimulation of the spinalcord is carried out by the same method as used in the brain stimulation.Rabbits are used in the experiments. A figure-eight coil is positioned onthe surface of the spline. Shifting the stimulating points on the spine,electromyographic (EMG) signals are recorded from limb muscles. The EMGsignals are clearly responding to the stimulation at a segment which
innervates limb muscles, whereas no EMG signals are obtained bystimulation of segments higher than the critical segment. It is alsoobtained that the amplitude of the EMG signals varies with the directionof stimulating currents.

DESCRIPTOR(S)- bioelectric potentials; biological effects of fields;
biomagnetism; brain; neurophysiology; patient diagnosis

IDENTIFIER(S)- arm; diagnosis; electromyographic signals; figure-eight
coil; foot; hand; head; human brain; human motor cortex; induced
eddy currents; limb muscles; localized stimulation; neural excitation;
neurological diseases; opposing pulsed magnetic fields; rabbits;
spinal cord TREATMENT CODE- TC-P; TC-X SECTIONAL CLASSIFICATION
CODE- A8760D; A8740; A8770E; A8730C; A8728; A8750; B7510D.

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Localized stimulation of the Human Brain by a pair of opposing pulsed magnetic fields

- INS 90-02 3609389 A90064277 (PHA)
Ueno, S.; Matsuda, T.; Fujiki, M.
JOURNAL NAME- Memoirs of the Faculty of Engineering, Kyushu University
ABBREVIATED JOURNAL TITLE- Mem. Fac. Eng. Kyushu Univ. (Japan) VOL. 49
NO. 3 Sept. 1989 PP. 161-73 14 reference(s) DOCUMENT TYPE-
Journal paper ISSN- 0023-6160 CODEN- MEKSAS CORPORATE AUTHOR-
Kyushu Univ., Fukuoka, Japan PUBLICATION COUNTRY- Japan LANGUAGE-
English (DEF)

A method of localized stimulation of the human brain is proposed. Thebasic idea is to concentrate induced eddy currents locally in thevicinity of a target in the cortex by a pair of coils which arepositioned outside the head so that time-varying magnetic fields passthrough the head in the opposite directions around a target. The eddy
currents induced at the targeted area are expected to flow together,which results in an increased current flow at the target. Spatialdistributions of induced eddy currents are calculated in cubic andspherical volume conductor models by a finite element method. The currentdensity at the target makes a peak which is higher by 2-3 times than
current densities at nontarget regions. Based upon the computersimulation, a figure eight coil is designed, and magnetic brainstimulation is carried out, the authors acting as volunteers. The resultsshow that the selective stimulation of the brain can be realized within a5 mm resolution. The functional mapping of the human motor cortex relatedto the hand area is obtained. It is also found that an optimum directionof stimulating currents for neural excitation exists in each functionalarea in the cortex.

DESCRIPTOR(S)- bioelectric phenomena; biological effects of fields;
biomagnetism; brain; eddy currents; finite element analysis

IDENTIFIER(S)- computer simulation; cortex; cubic volume conductor
model; current density; figure eight coil; finite element method;
hand; human brain; human motor cortex; induced eddy currents;
localized stimulation; neural excitation; opposing pulsed magnetic
fields; spherical volume conductor models; time-varying magnetic
fields; 5 mm NUMERICAL DATA INDEXING- size 5.0E-03 m TREATMENT CODE-
TC-T; TC-X SECTIONAL CLASSIFICATION CODE- A8750; A8730C; A8728;
A8740.

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The use of a pulsed traveling magnetic field in patients withchronic obstructive bronchitis 

- MED 98-07 98145016
Achkasov, V. V. JOURNAL NAME- Vopr Kurortol Fizioter Lech Fiz Kult NO. 6 1997 Nov-Dec PP. 14-5 DOCUMENT TYPE- JOURNAL ARTICLE JOURNAL CODE- XIG ISSN- 0042-8787 ITEM DESCRIPTION- English Abstract PUBLICATION COUNTRY- RUSSIA LANGUAGE- Russian
A course treatment with pulse running magnetic field generated by ALIMP-1 unit of patients with chronic obstructive bronchitis provides a subjective response, higher exercise tolerance due to improved function of the external respiration. The inductors-solenoids are fixed tangentially on the chest by means of the jacket.
CHECK TAG(S)- Comparative Study; Human MEDICAL DESCRIPTOR(S)-

*Bronchitis --RH; *Magnetics --TU Adult; Bronchitis --PP; Chronic Disease; Exercise Tolerance; Physical Therapy --IS; Respiratory Function Tests --SN.

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The use of a pulsed magnetic field in the treatment of lupus erythematosus

- MED 96-11 96241189 6
Khamaganova, I. V.; Berlin, I. u. V.; Volkov, V. E.; Voinich, Z. V.;
Arutiunova, E. S.
JOURNAL NAME- Ter Arkh VOL. 67 NO. 10 1995 PP. 84-7 DOCUMENT
TYPE- JOURNAL ARTICLE JOURNAL CODE- VLU JOURNAL SUBSET- MEDJSM
ISSN- 0040-3660 ITEM DESCRIPTION- English Abstract PUBLICATION
COUNTRY- RUSSIA LANGUAGE- Russian

The authors review literature data on application of impulsed magneticfield (IMF) in clinical practice. IMF introduction in LE treatment isthought beneficial because IMF antiinflammatory, analgetic effects,positive action on icrocirculation, immunological reactivity, theability to upgrade the effect of combined therapy. The trends observed in
the clinical and laboratory indices allowed the authors to recommend IMFfor wide application in LE.
CHECK TAG(S)- Comparative Study; Female; Human; Male MEDICAL
DESCRIPTOR(S)- *Lupus Erythematosus, Systemic --TH; *Magnetics --TU
Adolescence; Adult; Aged; Child; Chronic Disease; Drug Therapy ,
Combination; Evaluation Studies; Methods; Middle Age; Remission
Induction.

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Effects of pulsed magnetic fields in the therapy of osteoporosisinduced by ovariectomy in the rat. 

- MED 94-07 94206509
Zati, A.; Gnudi, S.; Mongiorgi, R.; Giardino, R.; Fini, M.; Valdre,
G.; Galliani, I.; Montagnani, A. M.
JOURNAL NAME- Boll Soc Ital Biol Sper VOL. 69 NO. 7-8 1993 Jul-Aug
PP. 469-75 DOCUMENT TYPE- JOURNAL ARTICLE JOURNAL CODE- ALS ISSN-
0037-8771 CORPORATE AUTHOR- Institute Orthopaedic Rizzoli, University
of Bologna. PUBLICATION COUNTRY- ITALY LANGUAGE- English

This paper presents preliminary results on the effects of pulsed electromagneticfields (EMF) in the therapy of post menopausal osteoporosis induced by ovariectomyin female rats aged ten months. In particular, the effects of the intensityof pulsed EMF applied at constant frequency has been studied. Magnetic fieldspulsed at 50 Hz were used having a positive sinusoidal wave form with a maximumintensity of 30 and 70 Gauss. Treatment lasting one hour per day for 4 monthsshowed that the pulsed EMF with 30 Gauss of maximum intensity are able to slowdown the bone mass loss, keeping it within some 10%; with pulsed EMF with 70Gauss of maximum intensity, instead, no significant bone mass loss was observed.
CHECK TAG(S)- Animal; Comparative Study; Female; Human MEDICAL DESCRIPTOR(S)-
*Magnetics --TU; *Osteoporosis, Postmenopausal --PC;
*Ovariectomy --AE Bone Density; Osteogenesis; Rats; Rats,Sprague-Dawley.

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Possible therapeutic applications of pulsed magnetic fields
 

MED 94-03 94061923 1 
Navratil, L.; Hlavaty, V.; Landsingerova, E. 
JOURNAL NAME- Cas Lek Cesk VOL. 132 NO. 19 1993 Oct 11 PP. 590-4 
DOCUMENT TYPE- JOURNAL ARTICLE JOURNAL CODE- CPY ISSN- 0008-7335 
ITEM DESCRIPTION- English Abstract PUBLICATION COUNTRY- CZECH REPUBLIC 
LANGUAGE- Czech 

Magnetotherapy is a relatively new, nowadays however, relatively widespread method in several medical disciplines. The mechanism proper of the favourable action of the pulsed magnetic field on the living organism is not quite clear 
so far, clinical investigations revealed, however, a favourable anti-inflammatory, angioedematous and analgesic therapeutic effect. The authors sought an optimal frequency of the pulsed magnetic field with regard to the character of the disease. They focused attention above all on treatment of acute and chronic inflammatory 
conditions of the locomotor apparatus, ischaemia of the blood vessels of the lower extremities, dyspeptic syndrome, lactation mastitis and other diseases.One therapeutic cycle lasted 20 minutes, the mean number of cycles varied between 5.8 and 7.7. A regression of complaints was recorded as a rule after 2-3 sessions. The optimal frequency of the pulsed magnetic field seems to be a value between 10.0 and 25.0 Hz. It is useful in particular in severe conditions to repeat the therapeutic cycle after 2-3 months. The advantage of this therapeutic method is the minimal number of contraindications.

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Therapeutic effects of pulsed magnetic fields on joint diseases.

- MED 93-06 93189305
Riva Sanseverino, E.; Vannini, A.; Castellacci, P.
JOURNAL NAME- Panminerva Med VOL. 34 NO. 4 1992 Oct-Dec PP.
187-96 DOCUMENT TYPE- JOURNAL ARTICLE JOURNAL CODE- OQN
ISSN- 0031-0808 CORPORATE AUTHOR- Universita di Bologna, Italy. PUBLICATIONCOUNTRY- ITALY LANGUAGE- English

The present paper describes the effects of pulsed magnetic fields (MF) on diseases of different joints, in chronic as well as acute conditions where the presence of a phlogistic process is the rule. Optimal parameters for MF applications were sought at the beginning of the study and then applied for 11 years; a technical modification in the MF generator was introduced 5 years ago to satisfy the requirement of a hypothesis advanced to understand the mechanism of MF treatment. 3,014 patients were treated by means of MF at extremely low frequencies and intensities. Patient follow-up was pursued as constantly as possible. Pain removal, recovery of joint mobility and maintenance of the improved conditions represented the parameters for judging the results as good or poor. The chi-square test was applied in order to evaluate the probability that the results are not casual. A general average value of 78.8% of good results and 21.2% of poor results was obtained. Higher(82%) percentages of good results were observed when single joint diseases were considered with respect to multiple joint diseases (polyarthrosis); in the latter, the percentage of good results was definitely lower (66%). The high percentage of good results obtained and the absolute absence of both negative results and undesired side-effects, together with the therapeutic advantage due to a technical modification in the MF generator, led to the conclusion that magnetic field treatment is an excellent physical therapy in cases of joint diseases. A hypothesis is advanced that external magnetic fields influence transmembrane ionic activity.
CHECK TAG(S)- Female; Human; Male MEDICAL DESCRIPTOR(S)- *Joint Diseases --TH; *Magnetics --TU Adolescence; Adult; Aged; Aged, 80 and over; Child; Joint Diseases --DI; Middle Age; Thermography.

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Effects of low-amplitude pulsed magnetic fields on cellular iontransport.
MED 87-11 87298620 5  Farndale, R. W.; Maroudas, A.; Marsland, T. P.
JOURNAL NAME- Bioelectromagnetics VOL. 8 NO. 2 1987 PP. 119-34 DOCUMENT TYPE-
JOURNAL ARTICLE JOURNAL CODE- 9Z7 JOURNAL SUBSET- MEDJSM ISSN- 0197-8462 PUBLICATION
COUNTRY- UNITED STATES LANGUAGE- English

Pulsed magnetic fields (PMFs) are widely used to treat difficult fractures of bone and other disorders of connective tissue. It is not clear how they interact with tissue metabolism, although it has been proposed that induced currents or electric fields impinging on cell membranes may modify their ion transport function. This hypothesis was tested by treating in vitro models for ion transport
processes with short-term exposure to PMFs. No change occurred in active transport of potassium or calcium in human red cells or in calcium transport through an epithelial membrane. We considered less direct action on red cell membranes, that their permeability might be modified after PMF treatment, and also that PMFs might alter the extracellular ionic activity within connective tissue by interacting with its Donnan potential. Each of these studies proved negative, and we conclude that the PMF waveforms used here do not exert a general short-term effect on cellular ion transport.

CHECK TAG(S)- Animal; Human; In Vitro MEDICAL DESCRIPTOR(S)- *Calcium --ME;
*Cartilage --ME; *Erythrocyte Membrane --ME; *Magnetics Allantois --ME; Biological
Transport, Active; Cattle; Chick Embryo;Chorion --ME; Na(+)-K(+)-Exchanging
ATPase --BL; Potassium --ME CAS REGISTRY/EC NUMBER(S)- *EC-3.6.1.37; *7440-09-7;
*7440-70-2 CAS SUBSTANCE NAME(S)- Na(+)-K(+)-Exchanging ATPase; Potassium; Calcium.

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The Canadian experience with pulsed magnetic fields in thetreatment of ununited tibial fractures

. - MED 86-10 de Haas, W. G.; Beaupre, A.; Cameron, H.; English, E.
JOURNAL NAME- Clin Orthop NO. 208 1986 Jul PP. 55-8 DOCUMENT TYPE- JOURNAL
ARTICLE JOURNAL CODE- DFY JOURNAL SUBSET- MEDJSA;
MEDJSM ISSN- 0009-921X PUBLICATION COUNTRY- UNITED STATES LANGUAGE- English 

A clinical survey of 56 patients was conducted at four different centers in Canada to evaluate the effect of extremely low frequency pulsed magnetic fields (PMF) on ununited fractures of the tibia. All ten patients with delayed union and 84% of the 44 patients with nonunionhealed. One case with a traumatic pseudarthrosis and one with a congenital pseudarthrosis failed to respond to treatment. These resultscompare favorably to those reported by others using a system with different pulse characteristics. Prolonged immobilization is necessary and poses problems of rehabilitation. Nonunions with a gap between the tibial fragments and pseudarthroses are better treated with bone grafting and internal fixation prior to electrical stimulation.
CHECK TAG(S)- Female; Human; Male MEDICAL DESCRIPTOR(S)- *Fractures, Ununited --TH; *Magnetics; *Tibial Fractures --TH Adolescence; Adult; Aged; Canada; Child; Chronic Disease; Combined Modality Therapy ; Electromagnetics --IS; Electromagnetics --TU; Evaluation Studies; Middle Age; Pseudarthrosis --TH; Time Factors; Wound Healing.

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Pulsed magnetic field therapy for tibial non-union [letter]

MED 84-10 84244912 2
O'Connor, B. T.
JOURNAL NAME- Lancet VOL. 2 NO. 8395 1984 Jul 21 PP. 171-2
DOCUMENT TYPE- LETTER JOURNAL CODE- L0S JOURNAL SUBSET- MEDJSA;
MEDJSM; MEDJSX ISSN- 0140-6736 PUBLICATION COUNTRY- ENGLAND
LANGUAGE- English
NO-ABSTRACT
CHECK TAG(S)- Human MEDICAL DESCRIPTOR(S)- *Electromagnetic Fields --TU; *Electromagnetics --TU; *Fractures, Ununited --TH; *Tibial Fractures --TH.

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Pulsed magnetic field therapy for tibial non-union. Interimresults of a double-blind trial.

- MED 84-08 84190306
Barker, A. T.; Dixon, R. A.; Sharrard, W. J.; Sutcliffe, M. L.
JOURNAL NAME- Lancet VOL. 1 NO. 8384 1984 May 5 PP. 994-6
DOCUMENT TYPE- CLINICAL TRIAL; JOURNAL ARTICLE; RANDOMIZED CONTROLLED
TRIAL JOURNAL CODE- L0S JOURNAL SUBSET- MEDJSA; MEDJSM; MEDJSX
ISSN- 0140-6736 PUBLICATION COUNTRY- ENGLAND LANGUAGE-

English Patients with tibial fractures which had remained un-united for at least 52 weeks were randomly allocated to either active or dummy pulsed magnetic field stimulators and treated in full leg plasters for 24 weeks with a non-weightbearing conservative regimen, as is usual with such techniques. Fractures in 5 of the 9 patients with working machines united and fractures in 5 of the 7 patients with dummy machines also united. These early results of this double-blind trial are compatible with a difference in success rate at 24 weeks on active treatment of + 33% to -61% (95% confidence limits) compared with the success rate on the dummy stimulators. The high proportion of fractures uniting in the control group suggests that conservative anagement of non-union is effective and this may explain much of the success attributed to pulsed magnetic field therapy.
CHECK TAG(S)- Female; Human; Male MEDICAL DESCRIPTOR(S)-*Electromagnetic Fields --TU; *Electromagnetics --TU; *Fractures, Ununited --TH; *Tibial Fractures --TH Adult; Aged; Clinical Trials; Double-Blind Method; Electromagnetic Fields --IS; Immobilization; Middle Age; Random Allocation; Wound Healing.

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