Lung Mucus (IMAGE) Saarland University Caption Scientists at the Saarland University and the Helmholtz Centre for Infection Research unraveled lung mucus’s physical properties: They discovered that a rigid gel scaffold in lung mucus separates large, fluid-filled pores and prevents nanoparticle movement beyond individual pore boundaries. Credit Credit: Schneider/ Kirch et al. 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.