Stock Photo: ASTHMA, DRAWING. ASTHMA, DRAWING Healthy and asthmatic bronchioli. Representation, on the left, a healthy bronchiolus in which the breathing is normal. Representation, on the right, an asthmatic bronchiolus in which the breathing has become difficult because of the narrowing of the lumen of bronchioli and also the secretion of mucus.

Stock Photo: 824-37062 ASTHMA, DRAWING. ASTHMA, DRAWING   Healthy and asthmatic bronchioli.  Representation, on the left, a healthy bronchiolus in which the breathing is normal.  Representation, on the right, an asthmatic bronchiolus in which the breathing has become difficult because of the narrowing of the lumen of bronchioli and also the secretion of mucus.