Considering that our previous study showed that Am80-mediated increases in Meflin expression in CAFs resulted in increases in tumor blood vessel area and intratumoral drug delivery of gemcitabine [24], we examined intratumoral delivery of i.p.-injected anti-PD-L1 rat antibodies by immunofluorescent (IF) staining on tumor tissue sections obtained from the MB49 model (Supplementary Fig. S6A). This evidence concerns the gene ISLR and neoplasm.