Fig. 3From: A role for endothelial nitric oxide synthase in intestinal stem cell proliferation and mesenchymal colorectal cancereNOS and iNOS immunohistochemistry in classified human CRC tumors. eNOS is highly expressed in human mesenchymal CRC tumors. Mesenchymal tumors showed a high expression of eNOS whereas this isoenzyme was low or absent in non-mesenchymal tumors. iNOS expression was found sporadically among the tumors and was restricted to particular areas or even individual cells where the induction may be triggered. Scale bars: 100 μm. CRC: colorectal cancer, eNOS: endothelial NO synthase, iNOS: inducible NO synthaseBack to article page