pre-incubation ( 1-5 min ) with 12-o-tetradecanoylphorbol-13-acetate ( tpa , 8-16 nm ) , a tumour-promoting phorbol ester known to activate protein kinase c , was found to inhibit acetylcholine-induced ca2+-dependent k+ and cl- currents in cells isolated from rat lacrimal glands .
C0039654
12-o-tetradecanoylphorbol-13-acetate
C0031586
phorbol ester