acetylcholinesterase and butyrylcholinesterase were demonstrated , by electron-microscopic examination of both muscle layers of the guinea-pig ductus deferens , to be localized on the axolemma of the nerve endings and in smooth-muscle fibres , on sarcolemma , in the intracellular caveolae and in the intercellular space .
C0001044
acetylcholinesterase
C0008429
butyrylcholinesterase