Infertility Induced in Mice by a Single Injection of Testosterone Propionate. ∗

Abstract

Summary

Mice 5, 10 and 20 days of age were given a single 1 mg injection of testosterone propionate. Fertility was tested when these mice were 3 months old and compared with littermate controls. No litters were obtained with mice treated at 5 days of age despite 100 days in breeding. Fertility of mice treated when 20 days old, however, was not decreased whereas mice treated at 10 days of age assumed an intermediate position.