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Snail expression in ductular reaction cells. (A,B) Immunohistochemical staining for Snail. Snail is strongly expressed by reactive ductular cells in a tissue section from a patient with chronic hepatitis C and severe necroinflammatory damage (B) while it is absent in the normal bile ducts (A). Negative (white arrow) and positive (black arrow) nuclei are indicated; ×400 final magnification.
