Furthermore, we found that stable cell lines derived from the ΔEBNA2 + Myc lymphomas (grown off the feeder layer) also often express one or more pre-B cell and/or pro-B cell associated proteins (S4 Fig) and respond to IL7 cytokine treatment by inducing STAT5 tyrosine phosphorylation (Fig 7C), indicating that the IL7R is functional. This evidence concerns the gene MYC and lymphoma.