As the Donor 1 CB cells produced lymphomas in cells infected with both ΔEBNA2 EBV alone (“ΔEBNA2”), or the combination of ΔEBNA2 EBV and Myc retrovirus (“ΔEBNA2 + Myc”), we compared the phenotypes of the tumors derived from this CB donor in the presence and absence of Myc over-expression. This evidence concerns the gene MYC and lymphoma.