Schematic of the lung epithelium (IMAGE) University of Freiburg Caption Schematic of the lung epithelium: The figure shows how cells with cilia (green) work together with mucus-forming cells (yellow, purple) to effectively remove pathogens from the lung. Credit CIBSS / P. Walentek & M. Rössler Usage Restrictions No restrictions. License Public Domain 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.