CD19 and lymphoma: Autopsy on the sick, lymphoma-burdened mice revealed that the Eμ-Myc;CD19-Cre;Mcl-1fl/fl mice (P*=0.0172) had significantly less lymphoma cells in the blood than Eμ-Myc;CD19-Cre mice, but no such drop was found for the sick Eμ-Myc;CD19-Cre;Mcl-1fl/+mice.