Abnormalities in human airway smooth muscle cell function and structure play critical roles in chronic inflammatory airway diseases, such as asthma, chronic obstructive pulmonary disease, and cystic fibrosis. One key feature in these diseases is narrowing of the airway, which is caused by an increase in the mass of airway smooth muscles due to the hyperplasia and/or hypertrophy of the human airway smooth muscle cells.  … Continue reading Olfactory receptors discovered in human bronchi.