to study the effect of phorbol esters ( and indirectly , the role of protein kinase c ) on cardiac muscle contractility , we examined the effects of phorbol myristate acetate ( pma ) on contractile state , transmembrane 45ca fluxes , and cytosolic free ca concentration ( [ ca ] i ) using spontaneously contracting cultured chick ventricular cells .
C0031586
phorbol esters
C0039654
phorbol