Motorola C331 User Manual page 153

cancers by the National Cancer Institute is expected to
bear on the accuracy and repeatability of these results.
2 Researchers conducted a large battery of laboratory tests
to assess the effects of exposure to mobile phone RF on
genetic material. These included tests for several kinds of
abnormalities, including mutations, chromosomal
aberrations, DNA strand breaks, and structural changes in
the genetic material of blood cells called lymphocytes.
None of the tests showed any effect of the RF except for
the micronucleus assay, which detects structural effects
on the genetic material. The cells in this assay showed
changes after exposure to simulated cell phone radiation,
but only after 24 hours of exposure. It is possible that
exposing the test cells to radiation for this long resulted in
heating. Since this assay is known to be sensitive to
heating, heat alone could have caused the abnormalities
to occur. The data already in the literature on the response
of the micronucleus assay to RF are conflicting. Thus,
follow-up research is necessary.
FDA is currently working with government, industry, and
academic groups to ensure the proper follow-up to these
industry-funded research findings. Collaboration with the
Cellular Telecommunications Industry Association (CTIA) in
particular is expected to lead to FDA providing research
recommendations and scientific oversight of new CTIA-
funded research based on such recommendations.
Two other studies of interest have been reported recently in
the literature:
1 Two groups of 18 people were exposed to simulated
mobile phone signals under laboratory conditions while
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