title: Rapid inactivation of enkephalin-like material by C.S.F. in chronic schizophrenia.
mesh_terms: D000293:Adolescent; D000328:Adult; D002908:Chronic Disease; D004723:Endorphins / Q000134:cerebrospinal fluid*; D004745:Enkephalins / Q000134:cerebrospinal fluid* / Q000172:deficiency; D005621:Friedreich Ataxia / Q000134:cerebrospinal fluid; D006801:Humans; D008875:Middle Aged; D012559:Schizophrenia / Q000134:cerebrospinal fluid*
chemical_list: D004723:Endorphins; D004745:Enkephalins