the protein kinase c activating beta-form of the phorbol ester 12-o-tetradecanoyl-phorbol-13-acetate ( tpa ; 10 ( -10 ) and 10 ( -7 ) m ) induced a dose-dependent alkalinization in both cell types of 0.03-0.12 units , whereas the alpha-form was inactive .
C0031586
phorbol ester
C0039654
phorbol