Airway epithelial cells are the cells that line the respiratory tract and play a crucial role in protecting the lungs from harmful substances, pathogens, and pollutants. These cells form a barrier that helps to trap and remove foreign particles, as well as produce mucus and other substances that help to clear the airways. Research in this area focuses on understanding the structure and function of airway epithelial cells, as well as their role in respiratory diseases such as asthma, chronic obstructive pulmonary disease (COPD), and lung cancer. This research aims to improve our understanding of the mechanisms underlying these diseases and develop new treatments and therapies to target airway epithelial cells and improve lung health.