Frankhuijzen, A.L.

5- ht tryptamine receptor response strip curve piperoxan fundu mianserin stomach preparation contraction ergotamine experiment action methysergide prostaglandin value influence rat fundus cyproheptadine effect dose-response 5- hydroxytryptamine antagonist bonta inhibition antagonism tryptamine receptors muscle concentration incubation d-tryptamine receptors table efad rats presence hydroxytryptamine phenoxybenzamine result d-tryptamine interaction pharmacal rat stomach strips log dose-response curves indomethacin arien 5- ht curve pre-incubation rat stomach 5- ht antagonism stomach strips contraction height organ 10- increase shift difference rat stomach fundus pd 2 value 70 min right frankhuijzen rat uterus rat stomach preparation height s.e.m protection agonist decrease activity european j frankhuyzen 5- ht-induced contractions rat fundus strips saxena european administration method solution pa 2 value