The lymphomas that arose in Eμ-Myc;Nfkb2-/- transgenics were phenotypically identical to those that arose in Eμ-Myc;Nfkb2+/+ mice, and full necropsy and histopathological examination demonstrated similar dissemination of disease in Eμ-Myc;Nfkb2+/+ versus Eμ-Myc;Nfkb2-/- mice (data not shown). This evidence concerns the gene NFKB2 and lymphoma.