title: Radioimmunoassays for alpha-endorphin and beta-endorphin.
mesh_terms: D001666:Binding Sites, Antibody; D001667:Binding, Competitive; D004723:Endorphins / Q000032:analysis*; D010455:Peptides / Q000032:analysis*; D011863:Radioimmunoassay / Q000379:methods; D013329:Structure-Activity Relationship
chemical_list: D004723:Endorphins; D010455:Peptides