5-Methoxytryptamine and 2-methyl-5-hydroxytryptamine-induced desensitization as a discriminative tool for the 5-HT3 and putative 5-HT4 receptors in guinea pig ileum. - Craig,D.A.; Eglen,R.M.; Walsh,L.K.M.; Perkins,L.A.; Whiting,R.L.; Clarke,D.E. (Naunyn Schmiedebergs Arch Pharmacol, 1990)