The retinoblastoma gene product negatively regulates transcriptional activation mediated by the human cytomegalovirus IE2 protein .
the retinoblastoma gene product negatively regulates transcriptional activation mediated by the human cytomegalovirus ie2 protein .
O B-protein_molecule I-protein_molecule I-protein_molecule O O B-protein_N/A I-protein_N/A O O O B-virus I-virus O O O