Fig. 2

Immunohistochemical staining (IHC) and in situ hybridization (ISH) staining of ENKTL. a Tumor cells show strong membranous and cytoplasmic expression of CD56 (IHC, ×200). b Tumor cells show strong nuclear expression of Epstein-Barr virus (EBV)-encoded small RNA (ISH, ×200). c Tumor cells show strong diffuse membranous and Golgi zone expression of CD30 (IHC, ×200)