only the 4g motif in the hiv enhancer is bound by cellular proteins in extracts prepared from unstimulated hela cells , whereas the 3g and 4g motifs are bound by factors in extracts prepared from hela cells treated with phorbol esters [ phorbol 12-myristate 13-acetate ( pma ) ] and lymphoid cells .
C0031586
phorbol esters
C0039654
phorbol