REL and lymphoma: Analysis of the phosphoproteomics data revealed that there was very little overlap between the up-regulated phosphopeptides (P value <0.05) seen in Eμ-Myc/RelAT505A and Rel−/− lymphoma cells relative to WT Eμ-Myc controls, with only 25 out of 234 or 480 being identical, respectively (Supplementary Figure S8A).