Figure 7.
Comparison of alveolar density and arithmetic mean septal thickness obtained using uniform vs. stratified samples. The alveolar density obtained by stereological analysis of intact lung samples vs. stratified (separated lobe) samples was compared for the lungs of mice with (A) normal (21% O2‐exposed) and (B) aberrant (85% O2‐exposed) late lung development. Similarly, the arithmetic mean septal thickness obtained by stereological analysis of intact lung samples vs. stratified (separated lobe) samples was compared for the lungs of mice with (C) normal (21% O2‐exposed) and (D) aberrant (85% O2‐exposed) late lung development. Male animals are indicated by blue symbols and female animals are by red symbols. Data reflect mean ± SD (n = 6–7 animals per experimental group). Comparisons were made by one‐way anova with Tukey's post hoc modification.