using these purified cell populations , we have found that , contrary to a number of published observations , both the calcium ionophore a23187 and the phorbol ester 12-o-tetradecanoyl-phorbol-13-acetate were dependent on the presence of accessory cells to produce a mitogenic response by human lymphocytes .
C0031586
phorbol ester
C0039654
12-o-tetradecanoyl-phorbol-13-acetate