EBV-encoded nuclear antigen ( EBNA ) -1 is expressed , whereas the immunogenic and proliferative EBNAs are not .
ebv-encoded nuclear antigen ( ebna ) -1 is expressed , whereas the immunogenic and proliferative ebnas are not .
B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule B-protein_family_or_group O O O O O O O O O O B-protein_family_or_group O O O