title: Leydig cell insufficiency--diagnosis and treatment.
mesh_terms: D001706:Biopsy; D006063:Chorionic Gonadotropin / Q000627:therapeutic use*; D006801:Humans; D007248:Infertility, Male / Q000175:diagnosis* / Q000188:drug therapy*; D007985:Leydig Cells / Q000378:metabolism*; D008297:Male; D008596:Menotropins / Q000627:therapeutic use*; D013091:Spermatogenesis; D013737:Testis / Q000473:pathology; D013739:Testosterone / Q000096:biosynthesis*
chemical_list: D006063:Chorionic Gonadotropin; D013739:Testosterone; D008596:Menotropins