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Representative examples of heparin-binding EGF-like growth factor [(HB-EGF); (A) strong, (B) weak], amphiregulin [(AREG)/0; (C) strong, (D) weak] and transforming growth factor-α staining [(TGFα); (E) strong, (F) weak)] immunohistochemical staining in the epithelial compartment (asterisk) of squamous cell carcinoma of the cervix.
