Steger R W, Peluso J J, Bruni J F, Hafez E S, Meites J
Endokrinologie. 1979 Feb;73(1):1-5.
Serum testosterone levels, testicular LH binding and the spermatogenic cycle were analyzed in rats 4 and 22 mo of age. With age, serum testosterone levels decreased from 3.2 to 0.63 ng/ml serum. There was no age related decline in testicular LH binding or changes in the spermatogenic cycle.
