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Mosaic vessels in human colon cancer. (A) Fluorescence confocal image of double-staining with anti-CD31 (visualized with Texas red), anticarcinoembryonic antigen (visualized with FITC). Arrowhead marks a region lacking detectable CD31 immunoreactivity. (B) Bright-field double-staining with anti-CD31 (visualized with diaminobenzidine), anticarcinoembryonic antigen (visualized with fast-red), and hematoxylin. (Scale bars: 50 μm.)
