TP53 and B-cell non-Hodgkin lymphoma: As indicated previously, Eμ‐myc; Pot1b∆/∆; p53+/− mice died by 8 weeks of age from fulminant, infiltrating B‐cell lymphoma, indicating that one allele of WT p53 was insufficient for complete tumor suppression in this genetic setting (Figs 4E and S1A).