title: A sensitive radioimmunoassay for bovine anti-Müllerian hormone, allowing its detection in male and freemartin fetal serum.
abstract: Two monoclonal antibodies have been used to set up a solid-phase RIA for bovine anti-Müllerian hormone (bAMH). One AMH unit is defined as the amount released by 1 g of bovine fetal testicular tissue during a 4 h incubation period. Calibration curves were prepared using aliquots of a standard 500 ml pool of incubation medium, containing 200 AMH mU/ml, diluted either in 50% pig testes incubation medium, 5% horse serum, 10% female calf fetal serum or pure female calf fetal serum. Linearization of the calibration curves was achieved through "logit-log" transformation, all four lines were parallel. Within and between-assay variability were less than 5%. The RIA is at least 600 times more sensitive than the bioassay for anti-Müllerian activity and can detect AMH in male and freemartin fetal serum.
mesh_terms: D000818:Animals; D054304:Anti-Mullerian Hormone; D001681:Biological Assay; D002417:Cattle; D005312:Fetal Blood / Q000032:analysis*; D005611:Freemartinism / Q000097:blood*; D006023:Glycoproteins; D006131:Growth Inhibitors; D008297:Male; D011863:Radioimmunoassay / Q000379:methods*; D013735:Testicular Hormones / Q000097:blood*
chemical_list: D006023:Glycoproteins; D006131:Growth Inhibitors; D013735:Testicular Hormones; D054304:Anti-Mullerian Hormone