Fig. 1

Morphologic and phenotypic features of RC cells. a Distribution of the size (longest diameter) of RC cells after 16 months of cell culturing. b Representative image of H&E-stained RC cells after 16 months in cell culture. c PCR analysis for EBV type 1 (EBNA1) and type 2 (EBNA2) gene in Mino (negative control), Granta (positive control), and RC cell lines. GAPDH serves as a loading control