(A) Schematic of experimental design. Mice were sacrificed on day 11 and antigen presentation was detected with lymph node cells or splenocytes from tumor-bearing mice. (B) Schematic of B3Z cell activation by antigen presentation. (C-E) B3Z cell activation after coculture with draining lymph node cells (C), non-draining lymph node cells (D) or spleen cells (E) from tumor-bearing mice treated with the various treatments. KCKO was utilized as control to KCKO-OVA to exclude the possible non-specific antigen presentation to B3Z cells. Results are expressed as mean ± SEM (5 mice per group) and analyzed by one-way ANOVA with Dunnett post-test. *, p<0.05, treated group compared with no treatment group; #, p<0.05, mFX + SBRT compared with mFX treated group. (F, G) CD11c.DTR-eGFP chimeric mice were implanted with KCKO-luc cells in pancreas and treated with mFX plus SBRT as in Figure 1. DCs were depleted by diphtheria toxin (DT). Tumor growth was analyzed by IVIS imaging twice a week. (F) Representative image on day 14 after tumor implantation. (G) Tumor growth curve based on IVIS imaging. Results are expressed as mean ± SEM (5 mice per group) and analyzed by one-way ANOVA with Dunnett post-test. *, p<0.05, mFX + SBRT compared with DCs depleted treatment group (DT+mFX+SBRT).