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Examples of CD24, CD44 and claudin 4 and 7 immunostaining in mammary invasive carcinomas (scale bar, 100 µm). (A) Claudin-negative; (B) CD24-negative; (C) CD44-negative; (D) claudin 4 2+; (E) claudin 7 2+; (F) CD24-positive; (G) claudin 4 3+; (H) claudin 7 3+; (I) CD44-positive.
