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Fig. 2 | Breast Cancer Research

Fig. 2

From: Comparison of three scoring methods using the FDA-approved 22C3 immunohistochemistry assay to evaluate PD-L1 expression in breast cancer and their association with clinicopathologic factors

Fig. 2

Examples of immunohistochemical staining results. a, d, g Hematoxylin and eosin images of the tissue microarray cores. b, e, h Images of PD-L1 staining. c, f, i Magnified images of the boxed areas in b, e, and h. Arrow, tumor-infiltrating immune cells. Arrowhead, tumor cells. The first row (ac) represents a case with positive staining in the tumor cells and negative staining in the immune cells. The second row (df) represents a case with positive staining in the immune cells and negative staining in the tumor cells. The third row (gi) represents a case with positive staining in both the immune cells and the tumor cells. Original magnification: a, b, d, e, g, h × 40; c, f, i × 100

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