NTP Technical Report on Toxicity, Reproductive, and Developmental Studies of 60-Hz Magnetic Fields Administered by Whole Body Exposure to F344/N Rats, Sprague-Dawley Rats, and B6C3F1Mice

NTP Technical Report on the Toxicity Studies Series

Volumn TOX-58, Issue , 1996, Pages 1-72

  Boorman, Gary A ^a   Bucher, John R ^c   Burka, Leo T ^c   Chapin, Robert E ^c   Travlos, Gregory S ^c   Witt, Kristine L ^b   McCormick, David L ^c   Brennecke, Lucas H ^c   Gauger, James R ^c   Johnson, Tim R ^c   Ryan, Bernadette ^c   Tomlinson, Michael J ^c   Seely, John C ^c   Mahler, Joel ^a   Hardisty, Jerry F ^c   Botts, Suzanne ^c   Hamilton, B F ^c   Morris, Richard W ^c   Mintz, Nicole G ^c   Rosenblum, Sarah ^c   Gunnels, Susan R ^c   Harper, Lynn M ^c   Rathman, Eric S ^c   Sharp, Waynette D ^c   more..

^a NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES   (United States)

^b OAK RIDGE ASSOCIATED UNIVERSITIES   (United States)

^c Pathology Associates Inc ^*

Author keywords

[No Author keywords available]

Indexed keywords

EID: 1842607336     PISSN: 23788984     EISSN: 23788992     Source Type: Book Series    
DOI: None     Document Type: Review

References (108)

1. AHLBOM, A. (1988). A review of the epidemiologic literature on magnetic fields and cancer. Scand. J. Work Environ. Health 14, 337-343.
2. ALDHOUS, M.E., AND ARENDT, J. (1988). Radioimmunoassay for 6-sulphatoxymelatonin in urine using an iodinated tracer. Ann. Clin. Biochem. 25, 298-303.
3. ANDERSON, L.E. (1993). Biological effects of extremely low-frequency electromagnetic fields: In vivo studies. Am. Ind. Hyg. Assoc. J. 54, 186-196.
4. ARMITAGE, P. (1971). Statistical Methods in Medical Research, pp. 362-365. John Wiley and Sons, New York.
5. BARNES,., WACHTEL, H., SAVITZ, D., AND ULLER, J. (1989). Use of wiring configuration and wiring codes for estimating externally generated electric and magnetic fields. Bioelectromagnetics 10, 13-21.
6. BATES, M.N. (1991). Extremely low frequency electromagnetic fields and cancer: The epidemiologic evidence. Environ. Health Perspect. 95, 147-156.
7. BEERS, G.J. (1989). Biological effects of weak electromagnetic fields from 0 Hz to 200 MHz: A survey of the literature with special emphasis on possible magnetic resonance effects. Magn. Reson. Imaging 7, 309-331.
8. BELLOSSI, A. (1986). Effect of static magnetic fields on survival of leukaemia-prone AKR mice. Radiat. Environ. Biophys. 25, 75-80.
9. BENIASHVILI, D.S., BILANISHVILI, V.G., AND MENABDE, M.Z. (1991). Low-frequency electromagnetic radiation enhances the induction of rat mammary tumors by nitrosomethyl urea. Cancer Lett. 61, 75-79.
10. BOORMAN, G.A., MONTGOMERY, C.A., JR., EUSTIS, S.L., WOL E, M.J., MCCONNELL, E.E., AND HARDISTY, J.. (1985). Quality assurance in pathology for rodent carcinogenicity studies. In Handbook of Carcinogen Testing (H.A. Milman and E.K. Weisburger, Eds.), pp. 345-357. Noyes Publications, Park Ridge, NJ.
11. BOORMAN, G.A., HICKMAN, R.L., DAVIS, G.W., RHODES, L.S., WHITE, N.W., GRI IN, T.A., MAYO, J., AND HAMM, T.E., JR. (1986). Serological titers to murine viruses in 90-day and 2-year studies. In Complications of Viral and Mycoplasmal Infections in Rodents to Toxicology Research and Testing (T.E. Hamm, Jr., Ed.), pp. 11-23. Hemisphere, New York.
12. BRENT, R.L., GORDON, W.E., BENNETT, W.R., AND BECKMAN, D.A. (1993). Reproductive and teratologic effects of electromagnetic fields. Reprod. Toxicol. 7, 535-580.
13. CAMERON, I.L., HUNTER, K.E., AND WINTERS, W.D. (1985). Retardation of embryogenesis by extremely low frequency 60 Hz electromagnetic fields. Physiol. Chem. Phys. Med. NMR 17, 135-138.
14. CAMERON, I.L., HARDMAN, W.E., WINTERS, W.D., ZIMMERMAN, S., AND ZIMMERMAN, A.M. (1993). Environmental magnetic fields: Influences on early embryogenesis. J. Cell Biochem. 51, 417-425.
15. CHERNO, N., ROGERS, J.M., AND KAVET, R. (1992). A review of the literature on potential reproductive and developmental toxicity of electric and magnetic fields. Toxicology 74, 91-126.
16. CODE O EDERAL REGULATIONS (C R) 21, Part 58. Good Laboratory Practices or Nonclinical Laboratory Studies.
17. COHEN, M.M., KUNSKA, A., ASTEMBORSKI, J.A., AND MCCULLOCH, D. (1986a). The effect of low-level 60-Hz electromagnetic fields on human lymphoid cells. II. Sister-chromatid exchanges in peripheral lymphocytes and lymphoblastoid cell lines. Mutat. Res. 172, 177-184.
18. COHEN, M.M., KUNSKA, A., ASTEMBORSKI, J.A., MCCULLOCH, D., AND PASKEWITZ, D. (1986b). Effect of low-level 60-Hz electromagnetic fields on human lymphoid cells: I. Mitotic rate and chromosome breakage in human peripheral lymphocytes. Bioelectromagnetics 7, 415-423.
19. COLEMAN, M.P., BELL, C.M., TAYLOR, H.L., AND PRIMIC-ZAKELJ, M. (1989). Leukaemia and residence near electricity transmission equipment: A case-control study. Br. J. Cancer 60, 793-798.
20. CONOVER, W.J. (1971). Practical Nonparametric Statistics. John Wiley and Sons, New York.
21. DEADMAN, J.E., CAMUS, M., ARMSTRONG, B.G., HEROUX, P., CYR, D., PLANTE, M., AND THERIAULT, G. (1988). Occupational and residential 60-Hz electromagnetic fields and high-frequency electric transients: Exposure assessment using a new dosimeter. Am. Ind. Hyg. Assoc. J. 49, 409-419.
22. DEGUCHI, T., AND AXELROD, J. (1972). Sensitive assay for serotonin N-acetyltransferase activity in rat pineal. Anal. Biochem. 50, 174-179.
23. DELGADO, J.M.R., LEAL, J., MONTEAGUDO, J.L., AND GRACIA, M.G. (1982). Embryological changes induced by weak, extremely low frequency electromagnetic fields. J. Anat. 134, 533-551.
24. DIXON, W.J., AND MASSEY,.J., JR. (1951). Introduction to Statistical Analysis, 1st ed., pp. 145-147. McGraw-Hill Book Company, New York.
25. DUNN, O.J. (1964). Multiple comparisons using rank sums. Technometrics 6, 241-252.
26. DUNNETT, C.W. (1955). A multiple comparison procedure for comparing several treatments with a control. J. Am. Stat. Assoc. 50, 1096-1121.
27. ECKERT, E.E. (1992). Magnetic influences on fetus and infant as reason for sudden infant death syndrome: A new testable hypothesis. Med. Hypotheses 38, 66-69.
28. EL NAHAS, S.M., AND ORABY, H.A. (1989). Micronuclei formation in somatic cells of mice exposed to 50-Hz electric fields. Environ. Mol. Mutagen. 13, 107-111.
29. RAZIER, M.E., REESE, J.A., MORRIS, J.E., JOSTES, R.., AND MILLER, D.L. (1990). Exposure of mammalian cells to 60-Hz magnetic or electric fields: Analysis of DNA repair of induced, single-strand breaks. Bioelectromagnetics 11, 229-234.
30. ULTON, J.P., COBB, S., PREBLE, L., LEONE, L., AND ORMAN, E. (1980). Electrical wiring configurations and childhood leukemia in Rhode Island. Am. J. Epidemiol. 111, 292-296.
31. GAUGER, J.R. (1985). Houshold appliances magnetic field survey. IEEE Transactions on Power Apparatus and Systems 104, 2436-2445.
32. GILMAN, P.A., AMES, R.G., AND MCCAWLEY, M.A. (1985). Leukemia risk among U.S. white male coal miners. A case-control study. J. Occup. Med. 27, 669-671.
33. GREENBERG, R.S., AND SHUSTER, J.L., JR. (1985). Epidemiology of cancer in children. Epidemiol. Rev. 7, 22-48.
34. GROTA, L.J., REITER, R.J., KENG P., AND MICHAELSON, S. (1994). Electric field exposure alters serum melatonin but not pineal melatonin synthesis in male rats. Bioelectromagnetics 15, 427-437.
35. JAUCHEM, J. (1993). Alleged health effects of electric or magnetic fields: Additional misconceptions in the literature. J. Microw. Power Electromagn. Energy 28, 140-155.
36. JENTSCH, A., LEHMANN, M., SCHONE, E., THOSS,., AND ZIMMERMANN, G. (1993). Weak magnetic fields change extinction of a conditioned reaction and daytime melatonin levels in the rat. Neurosci. Lett. 157, 79-82.
37. JONCKHEERE, A.R. (1954). A distribution-free k-sample test against ordered alternatives. Biometrika 41, 133-145.
38. JUUTILAINEN, J., AND LIIMATAINEN, A. (1986). Mutation frequency in Salmonella exposed to weak 100-Hz magnetic fields. Hereditas 104, 145-147.
39. JUUTILAINEN, J., AND SAALI, K. (1986). Development of chick embryos in 1 Hz to 100 kHz magnetic fields. Radiat. Environ. Biophys. 25, 135-140.
40. KATO, M., HONMA, K., SHIGEMITSU, T., AND SHIGA, Y. (1993). Effect of exposure to a circularly polarized 50-Hz magnetic field on plasma and pineal melatonin levels in rats. Bioelectromagnetics 14, 97-106.
41. KATO, M., HONMA, K., SHIGEMITSU, T., AND SHIGA, Y. (1994a). Circularly polarized 50-Hz magnetic field exposure reduces pineal gland and blood melatonin concentrations of Long-Evans rats. Neurosci. Lett. 166, 59-62.
42. KATO, M., HONMA, K., SHIGEMITSU, T., AND SHIGA, Y. (1994b). Horizontal or vertical 50-Hz, 1-pT magnetic fields have no effect on pineal gland or plasma melatonin concentration of albino rats. Neurosci. Lett. 168, 205-208.
43. KAUNE, W.T., AND ANDERSON, L.E. (1990). Physical aspects of EL electric and magnetic fields: Measurements and dosimetry. In Extremely Low Frequency Electromagnetic Fields: The Question of Cancer (B.W. Wilson, R.G. Stevens, and L.E. Anderson, Eds.), pp. 17-46. Battelle Press, Columbus, OH.
44. KAVET, R.I., AND BANKS, R.S. (1986). Emerging issues in extremely-low-frequency electric and magnetic field health research. Environ. Res. 39, 386-404.
45. KIRSCHVINK, J.L., KOBAYASHI-KIRSCHVINK, A., DIAZ-RICCI, J.C., AND KIRSCHVINK, S.J. (1992). Magnetite in human tissues: A mechanism for the biological effects of weak EL magnetic fields. Bioelectromagnetics 1 (Suppl.), 101-113.
46. KOCH, W.E., KOCH, B.A., MARTIN, A.H., AND MOSES, G.C. (1993). Examination of the development of chicken embryos following exposure to magnetic fields. Comp. Biochem. Physiol. 105A, 617-624.
47. LERCHL, A., NONAKA, K.O., STOKKAN, K.A., AND REITER, R.J. (1990). Marked rapid alterations in nocturnal pineal serotonin metabolism in mice and rats exposed to weak intermittent magnetic fields. Biochem. Biophys. Res. Commun. 169, 102-108.
48. LERCHL, A., NONAKA, K.O., AND REITER, R.J. (1991). Pineal gland "magneto sensitivityI to static magnetic fields is a consequence of induced electric currents (eddy currents). J. Pineal Res. 10, 109-116.
49. LIBURDY, R.P., SLOMA, T.R., SOKOLIC, R., AND YASWEN, P. (1993). EL magnetic fields, breast cancer, and melatonin: 60 Hz fields block melatonin's oncostatic action on ER breast cancer cell proliferation. J. Pineal Res. 14, 89-97.
50. LIN, J.C. (1991). Perspectives on health effects of electric and magnetic fields. Percept. Mot. Skills 72, 249-250.
51. LIVINGSTON, G.K., WITT, K.L., GANDHI, O.P., CHATTERJEE, I., AND ROTI ROTI, J.L. (1991). Reproductive integrity of mammalian cells exposed to power frequency electromagnetic fields. Environ. Mol. Mutagen. 17, 49-58.
52. LOSCHER, W., AND MEVISSEN, M. (1994). Animal studies on the role of 50/60-Hertz magnetic fields in carcinogenesis. Life Sci. 54, 1531-1543.
53. LOSCHER, W., MEVISSEN, M., LEHMACHER, W., AND STAMM, A. (1993). Tumor promotion in a breast cancer model by exposure to a weak alternating magnetic field. Cancer Lett. 71, 75-81.
54. LOSCHER, W., WAHNSCHA E, U., MEVISSEN, M., LERCHL, A., AND STAMM, A. (1994). Effects of weak alternating magnetic fields on nocturnal melatonin production and mammary carcinogenesis in rats. Oncology 51, 288-295.
55. MCCANN, J., DIETRICH,., RA ERTY, C., AND MARTIN, A.O. (1993). A critical review of the genotoxic potential of electric and magnetic fields. Mutat. Res. 297, 61-95.
56. MCLEAN, J.R.N., STUCHLY, M.A., MITCHEL, R.E., WILKINSON, D., YANG, H., GODDARD, M., LECUYER, D.W., SCHUNK, M., CALLARY, E., AND MORRISON, D. (1991). Cancer promotion in a mouse-skin model by a 60-Hz magnetic field: II. Tumor development and immune response. Bioelectromagnetics 12, 273-287.
57. MA EO, S., MILLER, M.W., AND CARSTENSEN, E.L. (1984). Lack of effect of weak low frequency electromagnetic fields on chick embryogenesis. J. Anat. 139, 613-618.
58. MA EO, S., BRAYMAN, A.A., MILLER, M.W., CARSTENSEN, E.L., CIARAVINO, V., AND COX, C. (1988). Weak low frequency electromagnetic fields and chick embryogenesis: ailure to reproduce positive findings. J. Anat. 157, 101-104.
59. MARONPOT, R.R., AND BOORMAN, G.A. (1982). Interpretation of rodent hepatocellular proliferative alterations and hepatocellular tumors in chemical safety assessment. Toxicol. Pathol. 10, 71-80.
60. MARTIN, A.H. (1988). Magnetic fields and time dependent effects on development. Bioelectromagnetics 9, 393-396.
61. MARTIN, A.H. (1992). Development of chicken embryos following exposure to 60-Hz magnetic fields with differing waveforms. Bioelectromagnetics 13, 223-230.
62. MARTINEZ, S.., GIMENEZ, G.M., ARMANAZAS, E., AND RUIZ, T.A. (1992). Pineal 'synaptic ribbons' and serum melatonin levels in the rat following the pulse action of 52-Gs (50-Hz) magnetic fields: An evolutive analysis over 21 days. Acta Anat. (Basel) 143, 289-293.
63. MEVISSEN, M., STAMM, A., BUNTENKOTTER, S., ZWINGELBERG, R., WAHNSCHA E, U., AND LOSCHER, W. (1993). Effects of magnetic fields on mammary tumor development induced by 7, 12-dimethylbenz(a)anthracene in rats. Bioelectromagnetics 14, 131-143.
64. MICHAELSON, S.M. (1987). Influence of power frequency electric and magnetic fields on human health. Ann. N. 1. Acad. Sci. 502, 55-75.
65. MILLER,., JR., AND SCHROEER, D. (1987). College Physics, 6th ed. Harcourt Brace Jovanovich, San Diego, CA.
66. MOORE, D.D., DENISTON, N.J., AND BLATTNER,.R. (1981). Sequence organization of the origins of DNA replication lambdoid coliphages. 2ene 17, 91-101.
67. MYERS, A., CLAYDEN, A.D., CARTWRIGHT, R.A., AND CARTWRIGHT, S.C. (1990). Childhood cancer and overhead powerlines: A case-control study. Br. J. Cancer 62, 1008-1014.
68. NORDENSON, I., HANSSON MILD, K., NORDSTROM, S., SWEINS, A., AND BIRKE, E. (1984). Clastogenic effects in human lymphocytes of power frequency electric fields: In vivo and in vitro studies. Radiat. Environ. Biophys. 23, 191-201.
69. NORDENSON, I., HANSSON MILD, K., OSTMAN, U., AND LJUNGBERG, H. (1988). Chromosomal effects in lymphocytes of 400-kV substation workers. Radiat. Environ. Biophys. 27, 39-47.
70. OAK RIDGE ASSOCIATED UNIVERSITIES (ORAU) (1992). Health effects of low frequency electric and magnetic fields. Pub. No. ORAU 921-8. U.S. Government Printing Office, Washington, DC.
71. OLCESE, J., AND REUSS, S. (1986). Magnetic field effects on pineal gland melatonin synthesis: Comparative studies on albino and pigmented rodents. Brain Res. 369, 365-368.
72. PINO, A., RICCI, R., AND PIOMBO, G. (1985). Absence of DNA damage in liver, spleen and kidney of rats after exposure to therapeutic magnetic fields. IRCS J. Med. Sci. 13, 257-258.
73. RANNUG, A., EKSTROM, T., HANSSON MILD, K., HOLMBERG, B., GIMENEZ-CONTI, I., AND SLAGA, T.J. (1993a). A study on skin tumour formation in mice with 50 Hz magnetic field exposure. Carcinogenesis 14, 573-578.
74. RANNUG, A., HOLMBERG, B., AND HANSSON MILD, K. (1993b). A rat liver foci promotion study with 50-Hz magnetic fields. Environ. Res. 62, 223-229.
75. RANNUG, A., HOLMBERG, B., EKSTROM T., AND HANSSON MILD, K. (1993c). Rat liver foci study on coexposure with 50 Hz magnetic fields and known carcinogens. Bioelectromagnetics 14, 17-27.
76. RANNUG, A., HOLMBERG, B., EKSTROM, T., HANSSON MILD, K., GIMENEZ-CONTI,.I., AND SLAGA, T.J. (1994). Intermittent 50 Hz magnetic field and skin tumor promotion in SENCAR mice. Carcinogenesis 15, 153-157.
77. RAO, G.N., HASEMAN, J.K., AND EDMONDSON, J. (1989a). Influence of viral infections on body weight, survival, and tumor prevalence in ischer 344/Ncr rats on two-year studies. Lab. Anim. Sci. 39, 389-393.
78. RAO, G.N., PIEGORSCH, W.W., CRAW ORD, D.D., EDMONDSON, J., AND HASEMAN, J.K. (1989b). Influence of viral infections on body weight, survival, and tumor prevalence of B6C3 1 (C57BL/6N x C3H/Hen) mice in carcinogenicity studies. Fundam. Appl. Toxicol. 13, 156-164.
79. REESE, J.A., JOSTES, R.., AND RAZIER, M.E. (1988). Exposure of mammalian cells to 60-Hz magnetic or electric fields: Analysis for DNA single-strand breaks. Bioelectromagnetics 9, 237-247.
80. REITER, R.J. (1992). Alterations of the circadian melatonin rhythm by the electromagnetic spectrum: A study in environmental toxicology. Regul. Toxicol. Pharmacol. 15, 226-244.
81. REITER, R.J. (1993a). Electromagnetic fields and melatonin production. Biomed. Pharmacother. 47, 439-444.
82. REITER, R.J. (1993b). Static and extremely low frequency electromagnetic field exposure: Reported effects on the circadian production of melatonin. J. Cell Biochem. 51, 394-403.
83. REITER, R.J., ANDERSON, L.E., BUSCHBOM, R.L., AND WILSON, B.W. (1988). Reduction of the nocturnal rise in pineal melatonin levels in rats exposed to 60-Hz electric fields in utero and for 23 days after birth. Life Sci. 42, 2203-2206.
84. ROSENTHAL, M., AND OBE, G. (1989). Effects of 50-Hertz electromagnetic fields on proliferation and on chromosomal alterations in human peripheral lymphocytes untreated or pretreated with chemical mutagens. Mutat. Res. 210, 329-335.
85. SAVITZ, D.A. (1993a). Epidemiologic studies of electric and magnetic fields and cancer: Strategies for extending knowledge. Environ. Health Perspect. 101, 83-91.
86. SAVITZ, D.A. (1993b). Overview of epidemiologic research on electric and magnetic fields and cancer. Am. Ind. Hyg. Assoc. J. 54, 197-204.
87. SAVITZ, D.A., AND ANANTH, C.V. (1994). Residential magnetic fields, wire codes, and pregnancy outcome. Bioelectromagnetics 15, 271-273.
88. SAVITZ, D.A., AND KAUNE, W.T. (1993). Childhood cancer in relation to a modified residential wire code. Environ. Health Perspect. 101, 76-80.
89. SAVITZ, D.A., WACHTEL, H., BARNES,.A., JOHN, E.M., AND TVRDIK, J.G. (1988). Case-control study of childhood cancer and exposure to 60-Hz magnetic fields. Am. J. Epidemiol. 128, 21-38.
90. SAVITZ, D.A., JOHN, E.M., AND KLECKNER, R.C. (1990). Magnetic field exposure from electric appliances and childhood cancer. Am. J. Epidemiol. 131, 763-773.
91. SCAR I, M.R., BERSANI,., COSSARIZZA, A., MONTI, D., CASTELLANI, G., CADOSSI, R., RANCESCHETTI, G., AND RANCESCHI, C. (1991). Spontaneous and mitomycin-C-induced micronuclei in human lymphocytes exposed to extremely low frequency pulsed magnetic fields. Biochem. Biophys. Res. Commun. 176, 194-200.
92. SHIMIZU, H., AKIYAMA, M., SUZUKI, Y., AND HAYASHI, K. (1989). The effects of magnetic field on mutagenic activity. Mutat. Res. 216, 377.
93. SHIRLEY, E. (1977). A non-parametric equivalent of Williams' test for contrasting increasing dose levels of a treatment. Biometrics 33, 386-389.
94. STEHLE, J., REUSS, S., SCHRODER, H., HENSCHEL, M., AND VOLLRATH, L. (1988). Magnetic field effects on pineal N-acetyltransferase activity and melatonin content in the gerbil-Role of pigmentation and sex. Physiol. Behav. 44, 91-94.
95. STEVENS, R.G. (1994). Re: "Magnetic fields and cancer in children residing near Swedish high-voltage power lines.I Am. J. Epidemiol. 140, 75.
96. STEVENS, R.G., DAVIS, S., THOMAS, D.B., ANDERSON, L.E., AND WILSON, B.W. (1992). Electric power, pineal function, and the risk of breast cancer. FASEB J. 6, 853-860.
97. STUCKHARDT, J.L., AND POPPE, S.M. (1984). resh visceral examination of rat and rabbit fetuses used in teratology testing. Teratog. Carcinog. Mutagen. 4, 181-188.
98. THOMAS, A., AND MORRIS, P.G. (1981). The effects of NMR exposure in living organisms. I. A microbial assay. Br. J. Radiol. 54, 615-621.
99. TROIANI, M.E., OAKNIN, S., REITER, R.J., VAUGHAN, M.K., AND COZZI, B. (1987). Depression in rat pineal N-acetyltransferase activity and melatonin content produced by a hind leg aline injection is time and darkness dependent. J. Pineal Res. 4, 185-195.
100. TROIANI, M.E., REITER, R.J., VAUGHAN, M.K., AND GONZALEZ-BRITO, A., AND HERBERT, D.C. (1988). The depression in rat pineal melatonin production after saline injection at night may be elicited by corticosterone. Brain Res. 450, 18-24.
101. WELKER, H.A., SEMM, P., WILLIG, R.P., COMMENTZ, J.C., WILTSCHKO, W., AND VOLLRATH, L. (1983). Effects of an artificial magnetic field on serotonin N-acetyltransferase activity and melatonin content of the rat pineal gland. Exp. Brain Res. 50, 426-432.
102. WERTHEIMER, N., AND LEEPER, E. (1979). Electrical wiring configurations and childhood cancer. Am. J. Epidemiol. 109, 273-284.
103. WHITSON, G.L., CARRIER, W.L., RANCIS, A.A., SHIH, C.C., GEORGHIOU, S., AND REGAN, J.D. (1986). Effects of extremely low frequency (EL ) electric fields on cell growth and DNA repair in human skin fibroblasts. Cell Tissue Kinet. 19, 39-47.
104. WILLIAMS, D.A. (1971). A test for differences between treatment means when several dose levels are compared with a zero dose control. Biometrics 27, 103-117.
105. WILLIAMS, D.A. (1972). The comparison of several dose levels with a zero dose control. Biometrics 28, 519-531.
106. WILSON, B.W., CHESS, E.K., AND ANDERSON, L.E. (1986). 60-Hz electric-field effects on pineal melatonin rhythms: Time course for onset and recovery. Bioelectromagnetics 7, 239-242.
107. WILSON, B.W., STEVENS, R.G., AND ANDERSON, L.E. (1989). Neuroendocrine mediated effects of electromagnetic-field exposure: Possible role of the pineal gland. Life Sci. 45, 1319-1332.
108. WOL, S., CROOKS, L.E., BROWN, P., HOWARD, R., AND PAINTER, R.B. (1980). Tests for DNA and chromosomal damage induced by nuclear magnetic resonance imaging. Radiology 136, 707-710.