As EBV infection of HCoEpC increased the release of CXCL13 by HCoEpC, one of the most important chemokines attracting B lymphocytes, we performed an overnight migration assay using mock- or EBV-infected HCoEpC supernatants to attract B lymphocytes, in trans-well-plates. This evidence concerns the gene CXCL13 and Epstein-Barr virus infection.