the substance p antagonists ( d-pro2 , d-trp7,9 ) sp ( 10 and 30 microm ) and ( arg5 , d-trp7,9 , nle11 ) sp5-11 ( 1 and 10 microm ) competitively antagonized both the contractile effects of substance p and eledoisin , and the inhibition by the tachykinins of the electrically-evoked release of [ 3h ] acetylcholine .
C0038585
substance p
C0039241
tachykinins