As a chronic respiratory disease, asthma is becoming an increasingly serious threatto human health. Unfortunately, the etiology and development of asthma are still notwell understood, while the pathological mechanism of asthma remains difficult toelucidate.
The airway are tubes that carry air into and out of your lungs. People who haveasthma have inflamed airways,This makes the airways swollen and very sensitive.When the airways react, the muscles around them tighten. This narrows the airways,causing le...