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. 2018 Jul 26;109(9):2957–2969. doi: 10.1111/cas.13716

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© 2018 The Authors. Cancer Science published by John Wiley & Sons Australia, Ltd on behalf of Japanese Cancer Association.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Immunohistochemical expression of programmed cell death ligand‐1 in colorectal cancer cells (A) and tumor‐infiltrating lymphocytes (B) using 3 different assays (original magnification, × 400)