the phorbol ester 12-o-tetradecanoyl phorbol-13-acetate ( tpa ) was used to examine the hypothesis that phosphoinositide turnover is involved in the regulation of myocardial contractility mediated by stimulation of alpha-adrenoceptors in the mammalian cardiac muscle .
C0031586
phorbol ester
C0039654
12-o-tetradecanoyl phorbol-13-acetate