thymocytes could also be induced to divide at nonpermissive temperatures ( 17 degrees c ) when incubated in the presence of the following combinations of stimulants , a ) the phorbol ester 12-o-tetradecanoyl-phorbol-13-acetate ( tpa ) and the calcium ionophore a23187 , b ) tpa and cona , or c ) a23187 and cona .
C0031586
phorbol ester
C0039654
12-o-tetradecanoyl-phorbol-13-acetate