To study the effect of microwave exposure on the density of Purkinje cells in developing rat brains in three different experiments: 1) rats and their offspring were exposed to 100 MHz (CW) electromagnetic irradiation (SAR 2.77 mW/g) for 4 h/day for 97 days; 2) pregnant rats were exposed daily from 17 to 21 days of gestation with 2450 MHz (CW) microwaves (SAR 2 mW/g) for 21 h/day; 3) 6-day-old rat pups were exposed 7 h/day for five days with 2450 MHz irradiation at 10 mW/cm².
Exposure duration: 21 h/day for 5 days
Exposure duration: 7 h/day for 5 days
|Exposure 3: 100 MHz|
|power density||100 W/m²||unspecified||unspecified||-||-|
|Exposure duration||pregnant rats starting on the sixth day of gestation throughtout their pregnancy period were exposed; their off-spings were exposed 4 h/day for 97 days|
|Additional info||Ref.Article: Smialowicz RI, Berman E, Bwisian SJ, Kim JB, Liddle CG, Reiter LW, Weil CM (1979): Chronic exposure of rats to 100 MHz (CW) radiofrequency radiation: Assesment of biological effects . URSI Bioelectromagnetics Symposium. Abstracts, p 397.|
The results showed a significant and irreversible decrease of Purkinje cell density in rats irradiated during fetal or fetal and early postnatal life. In rats exposed postnatally, and euthanized immediately after exposure, significant decrease in the relative number of Purkinje cells was apparent. However, restoration apparently occured after forty days of recovery.