when homogenates of cat or rat superior cervical ganglia in krebs-ringer solution were incubated at 37 degrees c , the ensuing decrease in acetylcholinesterase ( acetylcholine acylhydrolase , ec 3.1.1.7 ) activity was increased significantly by prior administration in vivo of tetramonoisopropylpyrophosphotetramide at doses that produced selective alkylphosphorylation of butyrylcholinesterase or propionylcholinesterase .
C0001044
acetylcholinesterase
C0008429
butyrylcholinesterase