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Immunohistochemical expression levels of Slug and CD133. Slug staining showed (A) negative (0), (B) weak (1+), (C) intermediate (2+), and (D) strong (3+) intensities. CD133 staining showed (E) negative (0), (F) weak (1+), (G) intermediate (2+), and (H) strong (3+) intensities. (All magnification, ×400).
