Figure 1From: Injurious mechanical ventilation in the normal lung causes a progressive pathologic change in dynamic alveolar mechanicsRandomization of alveoli for measurement of alveolar stability. The percentage change in alveolar area between peak inspiration and end expiration. (a) For each microscopic field analyzed, a vertical line bisecting the field was drawn. (b) Each alveolus that contacted this bisecting line was chosen for analysis of alveolar stability. Bar = 100 μm.Back to article page