From: Proinflammatory role of inducible nitric oxide synthase in acute hyperoxic lung injury
 |  | alveolar macrophages (%) | neutrophils (%) | lymphocytes (%) |
---|---|---|---|---|
wild-type mice | 21% O2 | 98.8 ± 0.5 | 0.0 ± 0.0 | 1.2 ± 0.5 |
 | 60% O2 | 97.7 ± 1.0 | 0.3 ± 0.2 | 2.0 ± 1.0 |
 | >95% O2 | 86.2 ± 1.8#* | 4.6 ± 1.0#* | 9.2 ± 0.9#* |
iNOS knockout mice | 21% O2 | 99.0 ± 0.4 | 0.7 ± 0.2 | 0.3 ± 0.2 |
 | 60% O2 | 98.9 ± 0.5 | 0.4 ± 0.3 | 0.7 ± 0.4 |
 | >95% O2 | 85.1 ± 2.0#* | 4.9 ± 1.3#* | 10.0 ± 1.2#* |