substance p ( sp ) and neurokinin a ( nka ) , two coexisting neuropeptides of the tachykinin family , stimulated the basal ( 5 mm k+ ) and evoked ( 40 mm k+ ) release of [ 3h ] 5-ht ( 5-hydroxytryptamine ) from tissue slices of the rat cerebral cortex .
C0038585
substance p
C0039241
tachykinin