title: Age-related secretion of androstenedione, testosterone and dihydrotestosterone by the human testis.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D000735:Androstenedione / Q000097:blood / Q000378:metabolism*; D013196:Dihydrotestosterone / Q000097:blood / Q000378:metabolism*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013737:Testis / Q000378:metabolism*; D013739:Testosterone / Q000097:blood / Q000378:metabolism*
chemical_list: D013196:Dihydrotestosterone; D013739:Testosterone; D000735:Androstenedione