A, Graph shows tumor growth curves. Effective inhibition of tumor growth can be observed 20 days after dendritic cell vaccination (P < .0001 for all); no significant difference in therapeutic response was observed between tumors in the left (L) and right (R) flanks for the vaccinated groups at any time point. Significant differences were observed between the 1-million and 2-million dendritic cell injection groups 30 days after dendritic cell vaccination (P < .0001). B, C, Graphs show comparisons between T2-weighted MR imaging measurements (SNR changes in the left popliteal LN 24 hours after injection) and longitudinal therapeutic response (tumor size changes) for, B, left flank tumors and, C, right flank tumors (R = 0.81 and R = 0.76, respectively).