Fig. 1From: Critical roles of airway smooth muscle in mediating deep-inspiration-induced bronchodilation: a big stretch?The fractional change in intralobular airway diameter at different lung volumes corresponding to transpulmonary pressures from 5 to 30 cmH2O in ex vivo sheep lungs. The airways are grouped into 3 sizes in terms of their diameters, small (< 3 mm), medium (between 3–4 mm), and large (> 4 mm). Reproduced from Dong et al. [24] with permissionBack to article page