We will highlight critical issues on lung epithelial biology such as stem cells and regenerative medicine, while expanding sessions to encompass themes such as single cell analytical approaches, cell-cell communication, dissect the biological distinctions mesenchymal proliferation as a repair mechanism and fibrosis; present the impact of new tools in single cell analysis on understanding lung development, repair, and disease; and characterize epithelial-mesenchymal interrelationships that maintain lung homeostasis and orchestrate repair and regeneration. The entire program has been designed to achieve a better understanding of the key clinical research issues and how they relate to basic mechanistic investigation.