In contrast , Egr-1 expression is abrogated in group I Burkitt tumor cells , irrespective of the EBV genome carrying status .
in contrast , egr-1 expression is abrogated in group i burkitt tumor cells , irrespective of the ebv genome carrying status .
O O O B-protein_molecule O O O O B-cell_line I-cell_line I-cell_line I-cell_line I-cell_line O O O O B-virus O O O O