title: The effect of monthly depot medroxyprogesterone acetate and testosterone on human spermatogenesis. I. Uniform dosage levels.
mesh_terms: D000328:Adult; D000368:Aged; D000988:Antispermatogenic Agents / Q000008:administration & dosage*; D004343:Drug Implants; D006801:Humans; D007273:Injections, Intramuscular; D008297:Male; D008525:Medroxyprogesterone / Q000008:administration & dosage / Q000031:analogs & derivatives*; D013739:Testosterone / Q000008:administration & dosage*; D013997:Time Factors
chemical_list: D000988:Antispermatogenic Agents; D004343:Drug Implants; D013739:Testosterone; D008525:Medroxyprogesterone