oriP is essential for EBNA gene promoter activity in Epstein-Barr virus-immortalized lymphoblastoid cell lines .
orip is essential for ebna gene promoter activity in epstein-barr virus-immortalized lymphoblastoid cell lines .
B-DNA_domain_or_region O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O B-cell_line I-cell_line I-cell_line I-cell_line I-cell_line O