A similar T-lymphoma phenotype and latency was observed after transplanting HSC-LSK cells isolated from young healthy and from the lymphoma-bearing MSH2-/- mice (Figs 1B and 3) suggested that HSC/progenitors of MSH2-/- mice retained hematopoietic function and were not altered by the presence of thymic lymphomas. This evidence concerns the gene MSH2 and lymphoma.