Figure 1From: CXCR4 expression on circulating pan-cytokeratin positive cells is associated with survival in patients with advanced non-small cell lung cancer CXCR4 expression on both tumor cells of primary tumors and metastatic lesions. A) adenocarcinoma, B) squamous cell carcinoma, C) adenocarcinoma (negative control), D) lymph node metastasis, E) bone metastasis, and F) bone metastasis (negative control). Magnification is at 100× for A-C and 200× for D-F.Back to article page