TOPICS: Testosterone, vas deferens, seminal vesicles, epididymis, penis, sperm, puberty, internal genitalia, leydig cells, luteinizing hormone (LH), gonadotropin-releasing hormone (GnRH), zona reticularis, adrenal cortex, androstenedione, androgen, dihydrotestosterone (DHT), external genitalia, prostate, scrotum, 5 alpha-reductase deficiency, ambiguous genitalia, follicle stimulating hormone (FSH), spermatogenesis, Sertoli cells, azoospermia, infertility, estrogen, aromatase, gynecomastia
