[Endocrine functions of the testis and aging].
D000328:Adult; D000367:Age Factors; D000368:Aged; D000375:Aging; D003075:Coitus; D006065:Gonadotropins, Pituitary / Q000378:metabolism*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013737:Testis / Q000033:anatomy & histology / Q000378:metabolism*; D013739:Testosterone / Q000378:metabolism*
D006065:Gonadotropins, Pituitary; D013739:Testosterone