tokens: Epstein-Barr virus ( EBV ) , an oncogenic human herpesvirus , binds to and infects normal human B lymphocytes via CD21 , the CR2 complement receptor .
folded_tokens: epstein-barr virus ( ebv ) , an oncogenic human herpesvirus , binds to and infects normal human b lymphocytes via cd21 , the cr2 complement receptor .
labels: B-virus I-virus O B-virus O O O B-virus I-virus I-virus O O O O O B-cell_type I-cell_type I-cell_type I-cell_type O B-protein_molecule O O B-protein_molecule I-protein_molecule I-protein_molecule O