Fl. Tabrah et al., ENHANCED MUTAGENIC EFFECT OF A 60 HZ TIME-VARYING MAGNETIC-FIELD ON NUMBERS OF AZIDE-INDUCED TA100 REVERTANT COLONIES, Bioelectromagnetics, 15(1), 1994, pp. 85-93
Forty-eight hours exposure to a two Gauss (0.2 mT) rms 60 Hz time vary
ing sinusoidal electromagnetic field increased the number of azide ind
uced TA100 revertant colonies of Salmonella typhimurium 14% as compare
d with controls in the ambient <2 milli-Gauss 60 Hz field. In the abse
nce of the electromagnetic field, the numbers of mutant colonies grown
within and outside the non-energized coil were nearly identical. With
out azide, the number of ''spontaneous'' mutant colonies forming in t
he experimental field was not statistically significant from numbers o
f colonies not exposed to field effects. Experimental temperature vari
ation of 2 degrees C had little effect on colony formation, and the en
hanced production of revertant colonies in the presence of the magneti
c field was maintained during continued culture for 5 additional days.
(C) 1993 Wiley-Liss, Inc.