Chronic obstructive pulmonary disease (COPD) represents a worldwide concern with high morbidity and mortality. and is believed to be associated with accelerated ageing of the lung. Alveolar abnormalities leading to emphysema are a key characteristic of COPD. Pulmonary alveolar epithelial type 2 cells (AT2) produce surfactant and function as progenitors for type 1 cells. https://www.getpureroutine.com/