The immunofluorescent (IF) staining of E-cadherin and β-catenin (two important components of adherens junctions) showed that adherens junctions were observed in both HONE1 and the EBV-positive NPC43 with the exogenous THY1, while the signals in the vector-alone were very weak (Figure 1A), indicating that the presence of THY1 can help to maintain the adherens junctions in NPC cells. This evidence concerns the gene CDH1 and nasopharyngeal carcinoma.