This book presents a comprehensive overview of the current understanding of the organization of endogenous lung stem and progenitor cell compartments during fetal lung development, postnatal lung growth and in adulthood. Progressing stage by stage, the chapters on fetal lung development emphasize the integrated role of epithelial, stromal, vascular and neural cell elements in building a functional lung, while the subsequent chapters on adult lung regeneration describe the nature and properties of adult lung stem/progenitor cells distributed along the proximal-distal axis of the airway tree....