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Expressions of β-arrestin-2 (β-arr2) and CXCR2 in adenocarcinoma (ADC) and squamous cell carcinoma (SCC). A. Western blot showed β-arr2 (mw: 50 kDa) and CXCR2 (mw: 41 kDa) expression in NSCLC cell lines and 8 surgical specimens (4 SCC and 4 ADC). B. Immunohistochemical staining is shown for β-arr2 in NSCLC (scale bar: 50 µm). C. Immunohistochemical staining is shown for CXCR2 in NSCLC (scale bar: 50 µm).
