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. 2021 Aug 16;14:4485–4497. doi: 10.2147/OTT.S324641

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© 2021 Song et al.

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Upregulation of PD-L1 expression in dMMR EC. (A–D) H&E staining and positive membrane staining for PD-L1 in dMMR ECs. H&E, hematoxylin and eosin. Scale bars: 60 μm.