MYC and lymphoma: To determine whether the survival advantage conferred by the Rock1 NC mutation was dependent on the transformation status of lymphoma cells, irradiated Rock1 WT recipient mice were transplanted with established primary lymphoma cells isolated from Eμ-Myc; Rock1 WT or Eμ-Myc; Rock1 NC mice that had displayed no significant differences in growth rates in vitro (Fig. S11D).