Eksborg, S Photometric determination of acetylcholine in rat brain after selective isolation by ion pair extraction and micro column separation. [electronic resource] - Acta pharmaceutica Suecica Jun 1971 - 205-16 p. digital Publication Type: Journal Article ISSN: 0001-6675 Subjects--Topical Terms: Acetylcholine--analysisAnimalsBrain ChemistryChromatographyHydrogen-Ion ConcentrationIonsMethodsMicrochemistryPhotometryRatsTissue Extracts