title: A study of the polymorphism of bovine thyrotropin preparations by immunochemistry and peptide mapping.
mesh_terms: D000818:Animals; D002417:Cattle; D005779:Immunodiffusion; D007122:Immunoelectrophoresis; D010455:Peptides / Q000032:analysis; D011233:Precipitin Tests; D013972:Thyrotropin / Q000032:analysis*
chemical_list: D010455:Peptides; D013972:Thyrotropin