title: Classically conditioned autonomic discrimination and tryptophan uptake in chronic schizophrenia.
mesh_terms: D000328:Adult; D001341:Autonomic Nervous System / Q000503:physiopathology*; D002908:Chronic Disease; D003214:Conditioning, Classical; D004193:Discrimination Learning; D006801:Humans; D008297:Male; D012559:Schizophrenia / Q000503:physiopathology*; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D014364:Tryptophan