Fig. 8: Combination treatment induced systemic anti-tumor immune response against CT26 tumor.

A–B Individual (A) and average (B) tumor growth curves in untreated and treated groups of primary tumors, including UnTx group, aPD-L1 group, Small NPs group, combination group. C–D Individual (C) and average (D) tumor growth curves of distant tumors in four different groups (n = 4). E Photographs and (F–G) corresponding quantitative weight of primary tumors and distant tumors of four groups (n = 3). H Weight of mice in four groups during treatment (n = 4). Statistical significance was obtained by one-way ANOVA using the Tukey post-test. ****P < 0.0001; ***P < 0.005; **P < 0.01. Data are means ± SD.