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. 2021 Aug 31;8:660202. doi: 10.3389/fmolb.2021.660202

FIGURE 2.

FIGURE 2

Picture (A) shows a positive membrane staining in PD-L1 in clear renal cell carcinoma. Picture (B) expresses cytoplasmic staining that is not considered positive in the evaluation. C and D are false positive because both are expressing the marker in inflammatory cells or macrophages.