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Effects of H2 and/or hyperoxia on the survival rate of zymosan-challenged mice. The mice were treated with or without 2% H2 and/or 98% O2 inhalation for 3 h starting at 1 and 6 h after normal saline or zymosan injection, respectively. Values are expressed as survival percentage (n=30 per group). *P<0.05 vs. ZY group; †P<0.05 vs. ZY + H2 group; ‡P<0.05 vs. ZY + O2 group. ZY, zymosan; d, days.
