the effect of four semi-purified compounds obtained from mandevilla velutina crude extract by silica gel chromatography fractionization were analysed for their inhibitory effects on uterine contractions induced by bradykinin ( bk ) , lysylbradykinin ( l-bk ) , acetylcholine ( ach ) and oxytocin , in vitro .
C0006100
bradykinin
C0022474
lysylbradykinin