Lung-on-chip model (IMAGE) eLife Caption A close-up image of the lung-on-chip model used in the study. The endothelial or vascular channel is highlighted with a red food colouring dye, and the epithelial or airway channel is highlighted with a blue food colouring dye. The design allows for a co-culture of the cells from the two channels in the middle of the chip. Credit Vivek Thacker (CC BY 4.0) Usage Restrictions This image is free to be reused, as long as it is credited as appropriate 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.