Andrä, J Histochemical demonstration of soluble and fixation-labile acetylcholinesterase activity in the optic tectum of rudd and frog with a semipermeable membrane technique. [electronic resource] - The Histochemical journal May 1985 - 572-5 p. digital Publication Type: Journal Article ISSN: 0018-2214 Standard No.: 10.1007/BF01003194 doi Subjects--Topical Terms: Acetylcholinesterase--metabolismAnimalsCyprinidaeHistocytochemistryMembranes, ArtificialPermeabilityRana esculentaSolubilitySuperior Colliculi--cytology