title: A stable enkephalin-like immunoreactive substance in human CSF.
mesh_terms: D000595:Amino Acid Sequence; D002850:Chromatography, Gel; D004723:Endorphins / Q000134:cerebrospinal fluid*; D004745:Enkephalins / Q000134:cerebrospinal fluid*; D006801:Humans; D007120:Immunochemistry; D008970:Molecular Weight; D011957:Receptors, Opioid / Q000032:analysis*
chemical_list: D004723:Endorphins; D004745:Enkephalins; D011957:Receptors, Opioid