Response of Individual Muscles of the Guinea Pig to "Large" Doses of Testosterone Propionate.

Abstract
Male guinea pigs were castrated at 68 days of age and injected daily for 65 days with 5, 10 or 25 mg/day of testosterone propionate. The 2 smaller doses maintained the rate of growth of the body and that of 48 individual muscles with the exception of the temporal and digastric. The highest dose not only maintained the rate of growth of the muscles but increased many slightly above normal.