Fig. 2

a Kappa (HIS 40x) & b Lambda (HIS 40x). Malignant cells showed kappa light chain restriction. c EBV (40x). EBERs study was positive in malignant cells. d PDL1 (40x). Programmed Death-Ligand 1 (PD-L1) study showed positivity in about 60% of the malignant cells