In this study pregnant rats were exposed throughout pregnancy to continuous wave 915 MHz, 2450 MHz or 6000 MHz radiation at power density levels of 10,20, or 35 mW/cm² respectively. The rats and their offspring were examined for any teratologic effects on their behaviour and growth patterns (e.g., weight gain, eye opening, peripheral blood patterns, etc).

Mothers and offspring exposed to 915 MHz did not exhibit any effects, while those exposed to the higher frequencies showed slight but inconsistent changes to a few of the morphologic and psychophysiologic parameters. The author concluded that the microwave frequencies tested do not induce a consistent, significant increase in reproductive risk.