Radiation effects on testes. II. incorporation of 65Zn after partial body gamma-irradiation of rats

The decrease in the uptake of 65-Zn by irradiated testes (720 R) was followed by recovery after 30 days. After a dose of 2000 R, uptake of 65-Zn was systemtically reduced over a period of 74 days. Studies following the administration of testosterone and FSH germinal cells of the testes is under the control of pituitary gonadotrophins.