the potency of inhibitory activity of h2-antagonists on acetylcholinesterase estimated from median inhibitory dose were in the following order of decreasing activity : ranitidine greater than tzu-0460 greater than cimetidine greater than ym-11170 , whereas that on pseudocholinesterase were tzu-0460 greater than ranitidine greater than cimetidine greater than ym-11170 .
C0001044
acetylcholinesterase
C0008429
pseudocholinesterase