DDX53 and neoplasm: Next, to examine whether it is necessary for the administrated antibody to exist in the tumors for the induction of antitumor immunity, we compared the intratumoral injection with the peritumoral injection of DTA-1 Ab, and found that the peritumoral injection also significantly suppressed CT26 tumor growth, and was compatible with that of intratumoral injection (Fig. 4a).