b-cll cells could become responsive with the inclusion of the phorbol ester tpa ( 12-o-tetradecanoylphorbol-13-acetate ) as co-stimulant such that half of the populations were now activated by il4 , particularly when bcgf was also present .
C0031586
phorbol ester
C0039654
12-o-tetradecanoylphorbol-13-acetate