3D human lung alveolar organoid (IMAGE) University of Cambridge Caption Representative image of three-dimensional human lung alveolar organoid showing alveolar stem cell marker, HTII-280 (red) and SARS-CoV-2 entry protein, ACE2 (green) Credit Jeonghwan Youk, Taewoo Kim, and Seon Pyo Hong Usage Restrictions In relation to this research 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.