As p53 is commonly mutated in human BLs (particularly EBV negative BLs), we also examined the level of p53 expression in ΔEBNA2 + Myc lymphomas and determined the p53 (TP53) sequence (from our RNA-seq data) in three different ΔEBNA2 + Myc Donor 1 derived tumors as described in the Methods. Here, TP53 is linked to lymphoma.