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Representative immunohistochemical staining for Jagged 1 (JAG1) and Delta-like 4 (DLL4) protein in primary non-small cell lung cancer (NSCLC) tissues and adjacent non-cancerous lung tissues. (A) Low expression of JAG1 in primary NSCLC specimens. (B) High expression of JAG1 protein in primary NSCLC specimens. (C) Low expression of DLL4 in primary NSCLC specimens. (D) High expression of DLL4 protein in primary NSCLC specimens. Magnification, ×100; inset images, ×400.
