acetyl-beta-methylcholine ( methacholine ; mech ) and carbamyl choline ( carbachol ) stimulated pgi2 synthesis in a dose-dependent manner ( ed50 = 1.5 x 10 ( -6 ) ; 2.5 x 10 ( -6 ) , respectively ) , whereas adrenaline , noradrenaline , histamine , serotonin , vasoactive intestinal polypeptide ( vip ) , nicotine , dimethyl phenylpiperazinium ( dmpp ) and adenosine triphosphate ( atp ) were without effect .
C0008405
choline
C0006945
carbachol