FN1 and neoplasm: As shown in Fig. S6b–f, the Fn+αPD-L1 group showed a smaller tumor volume than the Con and Fn groups, but still a significantly higher tumor volume than the αPD-L1 group, indicating Fn infection could decrease the effectiveness of αPD-L1 in larger-tumor-bearing mice, and the results are consistent with those shown in Fig. 2.