The human T-cell leukemia virus -encoded tax protein is a potent activator of many viral and cellular genes transcribed by RNA polymerase II .
the human t-cell leukemia virus -encoded tax protein is a potent activator of many viral and cellular genes transcribed by rna polymerase ii .
O B-virus I-virus I-virus I-virus O B-protein_molecule I-protein_molecule O O O O O O O O O O O O B-protein_complex I-protein_complex I-protein_complex O