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Author
Malyapa
RS, Ahern EW, Straube WL, et al.
These
authors published three papers that measured
DNA
damage after exposure to electromagnetic
radiation.
The
first study (1997a) used the same frequency
as that employed by Lai and Singh in their
studies - 2450 MHz. SARs were calculated to
be 0.7 and 1.9 W/kg. Two types of mammalian
cells were used - human glioblastoma cells
and mouse fibroblast cells. The cells were
irradiated for 2 hours, or 2hours followed
by incubation for 4 hours, or 4 hours followed
by 24 hours incubation. No significant differences
were observed between the test group and controls.
In
the second study (1997b) the same types of
cells were exposed to either frequency-modulated
continuous-waves (FMCW) at a frequency of
835.62 MHz or to code-division multiple access
(CDMA) at 845.74 MHz. The cells were exposed
for varying periods up to 24 hours. The SAR
was 0.6 W/kg. No significant differences were
seen between the test groups and controls.
The
third study (1998) attempted to replicate
the studies by Lai and Singh and examined
the effect of 2450 MHz continuous-wave radiation
on rat brain cells. They did not confirm the
observation that DNA damage is produced after
2 hours exposure to the radiation, or at 4
hours after the radiation.
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