title: Fluctuations in plasma testosterone levels in adult male rats and mice.
mesh_terms: D000818:Animals; D007456:Iodine Isotopes; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D011863:Radioimmunoassay; D051381:Rats; D013739:Testosterone / Q000097:blood*; D013997:Time Factors; D014316:Tritium
chemical_list: D007456:Iodine Isotopes; D014316:Tritium; D013739:Testosterone; D007986:Luteinizing Hormone