Diffuse alveolar damage (DAD) score in acute lung inflammation animals. Data are presented as median (interquartile range) as well as minima and maxima, respectively. Statistical analysis was performed using Kruskall–Wallis tests. DAD score ranged from 0–16 points. Score values were determined by multiplying characteristic extent by characteristic severity. The cumulated DAD score was calculated by adding the scores obtained for each individual characteristic and ranged from 0 to 64. I:E = inspiratory-to-expiratory; lipopolysaccharide-NV = nonventilated animals with acute lung inflammation; STP_high = high levels of stress versus time product (I:E 2:1); STP_low = low level of stress versus time product (I:E 1:2); STP_mid = middle level of stress versus time product (I:E 1:1).