we show that the phorbol ester 12-o-tetradecanoyl-phorbol-13-acetate stimulates dihydropyridine-sensitive 45ca2+ influx in primary cultures of neonatal rat ventricular myocytes within 5 s , but that after a 20-min pre-incubation period the phorbol ester markedly inhibits 45ca2+ influx .
C0039654
12-o-tetradecanoyl-phorbol-13-acetate
C0031586
phorbol ester