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Changes in the PaO2 in the NS (n=3), LPS, HCl and LPS-HCl groups (n=10 for each). Data are presented as the mean ± SD. #P<0.05 vs. the NS group;*P<0.05 vs. the LPS group; +P<0.05 vs. the HCl group. NS, normal saline; LPS, lipopolysaccharide.
