title: Photometric determination of choline in biological objects by ion pair extraction technique.
mesh_terms: D000818:Animals; D001923:Brain Chemistry; D002794:Choline / Q000032:analysis* / Q000652:urine; D002845:Chromatography; D006801:Humans; D008832:Microchemistry; D010851:Picrates; D051381:Rats
chemical_list: D010851:Picrates; D002794:Choline