Motorola C333 Specifications download pdf (Page 139)

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brain cancer) or acoustic neuroma (a benign tumor of the nerve

sheath). No statistically significant association was found between

mobile phone use and acoustic neuroma. There was also no

association between mobile phone use and gliomas when all types of

types of gliomas were considered together. It should be noted that

the average length of mobile phone exposure in this study was less

than three years.

When 20 types of glioma were considered separately, however, an

association was found between mobile phone use and one rare type

of glioma, neuroepithelliomatous tumors. It is possible with multiple

comparisons of the same sample that this association occurred by

chance. Moreover, the risk did not increase with how often the mobile

phone was used, or the length of the calls. In fact, the risk actually

decreased with cumulative hours of mobile phone use. Most cancer

causing agents increase risk with increased exposure. An ongoing

study of brain cancers by the National Cancer Institute is expected to

bear on the accuracy and repeatability of these results.

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

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Motorola C333 Specifications Page 139