Figure 1From: The paradoxical patterns of expression of indoleamine 2,3-dioxygenase in colon cancerExpression of IDO and Bin1 in colon cancer. IDO is expressed in primary colon cancer cells (A), in adjacent non-cancerous epithelium (B) in lymph node metastases (C), and in tumor-draining lymph nodes without metastasis (D). Bin1 is also expressed in cancer cells and epithelium (E, F; immunohistochemical assay, ×200).Back to article page