Numbers and proliferation of TCRTg101 were similar in leukemia-bearing Batf3−/− and Batf3+/+ mice, indicating that cDC1s—the major subset of cross-presenting DCs—were not required for antigen recognition and expansion of TCRTg101in vivo (Figures S6A–S6F). The gene discussed is BATF3; the disease is leukemia.