Fig. 6

Immunohistochemistry and analysis after miRNA34a delivery. A Immunohistochemistry and positive pixel count algorithm images for PD-L1 in each tumor. The scale bar is 4 mm. B The positivity graph of each tumor after processing by the positive pixel count algorithm (mean ± SD, n = 3, **P < 0.01 vs MNVs with scrambled miRNA, vs MNVs with miRNa34a)