title: Editorial: Hormones and elderly testes.
mesh_terms: D000368:Aged; D000375:Aging; D004958:Estradiol / Q000097:blood; D004970:Estrone / Q000097:blood; D006065:Gonadotropins, Pituitary / Q000378:metabolism; D006801:Humans; D007985:Leydig Cells / Q000166:cytology; D008297:Male; D008875:Middle Aged; D013091:Spermatogenesis; D013737:Testis / Q000033:anatomy & histology / Q000502:physiology*; D013739:Testosterone / Q000097:blood / Q000378:metabolism*
chemical_list: D006065:Gonadotropins, Pituitary; D004970:Estrone; D013739:Testosterone; D004958:Estradiol