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Expression of CD44v6 in esophageal squamous cell carcinoma (ESCC) tissue (Envision, ×400). (A) Immunohistochemical staining of CD44v6 in cytoplasm and membrane (IHC score: 15); (B) Immunohistochemical staining of CD44v6 in cytoplasm (IHC score: 3). IHC, immunohistochemistry.
