Immunofluorescence Image of Mouse Colon (IMAGE) Kobe University Caption SAP-1 localizes to the microvillus of the brush border in colonic epithelial cells. SAP-1 (red), β-catenin (green), and nuclei (blue). Credit 2004- Kobe University. All Rights Reserved. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.