the two parameters of the active [ methyl-3h ] choline uptake into isolated rat forebrain microvessels , km and vmax , were determined for 1- , 3- , 10- , and 24-month-old charles river male rats and compared with the activities of the enzymes choline acetyltransferase ( chat ) , acetylcholinesterase ( ache ) , and butyrylcholinesterase ( buche ) in these microvessels over the same time course .
C0001044
acetylcholinesterase
C0008429
butyrylcholinesterase