the effect was inhibited by hexamethonium , lignocaine , or by the tachykinin antagonist ( d-pro2 , d-trp7,9 ) -sp , but not by atropine , or by a combination of the histamine h1-receptor antagonist chlorpheniramine and the h2-receptor antagonist ranitidine .
C0039241
tachykinin
C0038585
sp