EFFECT OF MODERATE HEAT ON THE TESTES OF RATS AND MONKEYS

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Abstract
The effect of daily immersion of the scrotum in warm water (44[degree] [plus or minus] 1[degree]C) for short periods of time for 8 weeks on the structure and function of testes in albino rats and monkeys was investigated. Both the rats and monkeys showed loss of weight of testes, atrophy of tubules and degeneration of the germinal epithelium. Judged on the basis of reproductive performance, the rats were found to be infertile. The epididymal smears of the monkeys showed no spermatozoa. Suspension of immersion treatment for 6 weeks in the rats resulted in partial regeneration of germinal epithelium of the testes.