title: Further studies on Leydig cell function in old age.
mesh_terms: D000368:Aged; D000375:Aging; D006063:Chorionic Gonadotropin; D004958:Estradiol / Q000097:blood; D004970:Estrone / Q000097:blood; D005640:Follicle Stimulating Hormone / Q000097:blood; D007987:Gonadotropin-Releasing Hormone; D006801:Humans; D007985:Leydig Cells / Q000502:physiology*; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D008875:Middle Aged; D010901:Pituitary Function Tests; D011863:Radioimmunoassay; D013739:Testosterone / Q000097:blood
chemical_list: D006063:Chorionic Gonadotropin; D004970:Estrone; D007987:Gonadotropin-Releasing Hormone; D013739:Testosterone; D004958:Estradiol; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone