tokens: Epithelial cells are the major site of lytic EBV replication within the human host , and viral reactivation occurs in EBV -associated nasopharyngeal carcinomas .
folded_tokens: epithelial cells are the major site of lytic ebv replication within the human host , and viral reactivation occurs in ebv -associated nasopharyngeal carcinomas .
labels: O O O O O O O B-other_name B-virus O O O B-multi_cell I-multi_cell O O O O O O B-virus O B-other_name I-other_name O