mucins (IMAGE) University of North Carolina Health Care Caption Atomic Force microscope image showing the organization of mucins MUC5AC and MUC5B (green fiber structures) Credit Kesimer Lab, UNC School of Medicine 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.