[Testicular insufficiency].
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D013734:Androgen-Insensitivity Syndrome; D000728:Androgens / Q000096:biosynthesis; D002648:Child; D002675:Child, Preschool; D003456:Cryptorchidism; D012734:Disorders of Sex Development; D006801:Humans; D007248:Infertility, Male; D008297:Male; D013094:Spermatozoa; D013733:Testicular Diseases / Q000196:embryology; D013737:Testis / Q000196:embryology / Q000254:growth & development / Q000502:physiology
D000728:Androgens