title: Measurement of beta-endorphin and enkephalins in biological tissues and fluids.
mesh_terms: D000818:Animals; D000936:Antigen-Antibody Complex; D001923:Brain Chemistry; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004723:Endorphins / Q000032:analysis* / Q000097:blood / Q000134:cerebrospinal fluid; D004744:Enkephalin, Methionine / Q000097:blood / Q000302:isolation & purification; D004745:Enkephalins / Q000032:analysis*; D006801:Humans; D007106:Immune Sera; D007457:Iodine Radioisotopes; D010902:Pituitary Gland / Q000032:analysis*; D011863:Radioimmunoassay / Q000379:methods; D011865:Radioisotope Dilution Technique; D014316:Tritium; D001615:beta-Endorphin
chemical_list: D000936:Antigen-Antibody Complex; D004723:Endorphins; D004745:Enkephalins; D007106:Immune Sera; D007457:Iodine Radioisotopes; D014316:Tritium; D004744:Enkephalin, Methionine; D001615:beta-Endorphin