Fig. 1

Tumor-associated macrophage markers (CD68 & CD163), VEGF-A, and VEGF-C expression in human non-small cell lung cancer (NSCLC) tissues. Representative immunohistochemical images of CD68 (a), CD163 (b), double staining of CD68 and CD163 (c), VEGF-A (d), and VEGF-C (e), immunoglobulin G (IgG) isotype control (f). Arrowhead indicates dual stained CD163 (red) and CD68 (brown), and asterisk indicates CD68. Scale bar = 100 µm (30 µm in inset)