Inhibition of spermatogenesis.
D000328:Adult; D000368:Aged; D001706:Biopsy; D002452:Cell Count; D003272:Contraceptive Agents, Male / Q000008:administration & dosage*; D003692:Delayed-Action Preparations; D006801:Humans; D007279:Injections, Subcutaneous; D007989:Libido / Q000187:drug effects; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D008525:Medroxyprogesterone / Q000008:administration & dosage; D008535:Megestrol / Q000008:administration & dosage; D008875:Middle Aged; D009640:Norethindrone / Q000008:administration & dosage; D011374:Progesterone / Q000008:administration & dosage; D012826:Silicone Elastomers; D013091:Spermatogenesis / Q000187:drug effects*; D013737:Testis / Q000187:drug effects / Q000648:ultrastructure; D013739:Testosterone / Q000008:administration & dosage / Q000097:blood
D003272:Contraceptive Agents, Male; D003692:Delayed-Action Preparations; D012826:Silicone Elastomers; D013739:Testosterone; D011374:Progesterone; D007986:Luteinizing Hormone; D008535:Megestrol; D008525:Medroxyprogesterone; D009640:Norethindrone