title: The role of androgens in the initiation of spermatogenesis in man.
mesh_terms: D000735:Androstenedione / Q000096:biosynthesis / Q000097:blood; D001706:Biopsy; D002250:Carbon Radioisotopes; D002648:Child; D002784:Cholesterol / Q000378:metabolism; D006801:Humans; D007984:Leydig Cell Tumor / Q000378:metabolism* / Q000503:physiopathology; D008297:Male; D011284:Pregnenolone / Q000378:metabolism; D011374:Progesterone / Q000378:metabolism; D013091:Spermatogenesis; D013737:Testis / Q000378:metabolism* / Q000503:physiopathology; D013739:Testosterone / Q000096:biosynthesis / Q000097:blood; D014316:Tritium
chemical_list: D002250:Carbon Radioisotopes; D014316:Tritium; D013739:Testosterone; D000735:Androstenedione; D011374:Progesterone; D011284:Pregnenolone; D002784:Cholesterol