64:1217-1226 , 1990 ) , the promoter for the bzlf1 gene ( zp ) contains two distinct types of elements ( zi and zii [ an ap-1-like domain ] ) which are responsive to the phorbol ester 12-o-tetradecanoylphorbol-13-acetate ( tpa ) , an inducer of the viral lytic cycle .
C0031586
phorbol
C0039654
12-o-tetradecanoylphorbol-13-acetate