Fig. 2From: Detection of Epstein–Barr virus infection in thymic epithelial tumors by nested PCR and Epstein–Barr-encoded RNA ISHOne case of type B2 thymoma and 2 cases of thymic carcinomas were positive for EBER. (A) No signals were visible either in lymphocytes or in tumor cells. (B) The B2 thymoma showed positive signals only within the infiltrating lymphocytes (arrow heads). (C, D) EBER ISH showed nuclear signals within the tumor cells of thymic carcinoma (arrow, x100)Back to article page