in guinea pig caudate slices preloaded with [ 3h ] choline , superfusion with medium containing ca2+ and the phorbol ester tpa ( 12-o-tetradecanoyl phorbol 13-acetate ) produced an increase in the ca2+-dependent , depolarization-evoked release of acetylcholine ( ach ) , with no significant effect on the evoked ca2+ influx .
C0031586
phorbol ester
C0039654
12-o-tetradecanoyl phorbol