Tumor size measurements revealed that after iMWA, intratumoral injection of a cholesterol‐catalyzed hydrogel combined with an anti‐PD‐L1 antibody more effectively suppressed the growth of both residual primary and distant tumors to a considerably greater extent than iMWA or anti‐PD‐L1 immunotherapy alone (Figure 7B,C). Here, CD274 is linked to neoplasm.