Epithelial cell populations (IMAGE) The University of Hong Kong Caption The research team induced maturation in long-term expandable organoids and generated nasal, airway and alveolar organoids that contain all major epithelial cell populations in the human respiratory tract. Credit The University of Hong Kong Usage Restrictions N/A License Original 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.