B-cell proliferation and induction of early G1-regulating proteins by Epstein-Barr virus mutants conditional for EBNA2 .
b-cell proliferation and induction of early g1-regulating proteins by epstein-barr virus mutants conditional for ebna2 .
B-cell_type O O O O O B-protein_family_or_group I-protein_family_or_group O B-virus I-virus I-virus O O B-protein_molecule O