title: Plasma concentration of LH and testosterone in castrated rams treated with testosterone or testosterone propionate.
abstract: After injection of castrated rams with 600 mg testosterone or testosterone propionate, plasma LH levels were biphasic, with significant decreases at 6-10 and 96 h after treatment. These results support the suggestion that testosterone acts at the hypothalamo-pituitary level by two different mechanisms.
mesh_terms: D000818:Animals; D002369:Castration; D007986:Luteinizing Hormone / Q000097:blood*; D008297:Male; D012756:Sheep; D013739:Testosterone / Q000031:analogs & derivatives* / Q000097:blood / Q000494:pharmacology*
chemical_list: D013739:Testosterone; D007986:Luteinizing Hormone