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. 2022 Apr 16;193(3):545–553. doi: 10.1007/s10549-022-06587-3

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Fig. 1 — Examples of digitized tissue slides of a stroma-high (80% stroma) primary breast carcinoma (a), an intermediate (50% stroma), but still stroma-low tumor (b), and a stroma-low (10% stroma) primary breast carcinoma (c) which all meet the criterium for correct scoring of tumor cells being present on all four sides of the circular field of vision (field view with × 10 objective)