the compound action potential ( apc ) of the frog isolated sciatic nerve was suppressed in a concentration-dependent manner by the tachykinin antagonists [ d-pro2 , d-trp7,9 ] sp and [ arg5 , d-trp7,9 ] sp- ( 5-11 ) , both being about 4 times more potent than lidocaine .
C0039241
tachykinin
C0038585
sp