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Immunohistochemistry for β1 integrin in Invasive and In situ Breast Carcinoma. DCIS: (A) negative (100×) and (B) positive (200×); IDC: (C) positive (200x) and (D) detail with 400x of the circled area. β1 integrin can be found both in cytoplasm and plasma membrane. (SP method, high power microscopic view).
