title: A specific homologous radioimmunoassay for human beta-endorphin: direct measurement in biological fluids.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis; D003429:Cross Reactions; D004723:Endorphins / Q000032:analysis* / Q000097:blood / Q000134:cerebrospinal fluid; D005260:Female; D005312:Fetal Blood / Q000032:analysis; D006801:Humans; D008297:Male; D011247:Pregnancy; D011863:Radioimmunoassay / Q000379:methods; D012737:Sex Factors; D008083:beta-Lipotropin
chemical_list: D004723:Endorphins; D008083:beta-Lipotropin