Figure 1: Microscopic examination of PBMC-derived EBV-immortalized B-cells from a RA patient 8A one week after infection. These immortalized cells are annotated as LCL-8A. Red arrows show the rosette-like EBV-immortalized LCLs at 4x (upper panel), 10x (middle panel), and 20x (bottom panel) magnifications. Scale bars are indicated in yellow.