Table 1.

Body weight (g) of wild-type and iNOS knockout mice after 72 h exposure to 21%, 60%, and >95% O₂*

		21% O2	60% O2	>95% O2
wild-type mice	before exposure	27.1 ± 1.0	26.5 ± 0.8	27.8 ± 0.9
	after exposure	28.1 ± 0.9	28.1 ± 0.3	23.2 ± 0.6#
iNOS knockout mice	before exposure	24.9 ± 0.7	23.3 ± 0.5	25.2 ± 0.9
	after exposure	26.1 ± 0.4	24.0 ± 0.5	24.1 ± 0.7

*Each value represents mean ± SEM, n = 7.

^#p < 0.05 vs. before exposure.