Enhancement of ionizing radiation effect on the testes of rats by microwave or ultrasound-induced hyperthermia.

Hyperthermia induced from microwave 30 watts for 5 minutes or from ultrasound 1 watt/cm2 for 5 minutes as well as x-rays were destructive to the testes of rats. The combination of x-ray and hyperthermia enhanced the destructuve effect regarding the degree of reduction of spermatogenesis as well as the number of tubules affected.