the effect of a substance p antagonist , [ d-pro2 , d-trp7,9 ] -substance p ( spa ) , on gastric emptying and gastrointestinal transit in the rat was studied in order to elucidate a possible physiological role of endogenous substance p and other tachykinins in gastrointestinal motility .
C0038585
substance p
C0039241
tachykinins