M Cells (IMAGE) University of California - Riverside Caption This is a Scanning Electron Microscopy image of intestinal Peyer's patch M cells (purple) surrounded by intestinal epithelial cells (orange). Credit Lo lab, UC Riverside. 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.