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A comparison of lung tissue from 21-day control and 21-day ALA-treated mice showing that ALA increased the levels of protoporphyrin IX (PpIX) fluorescence (A) and VASP phosphorylation (B). Summary data showing that superoxide (C) and extracellular peroxide (D) levels are significantly increased by chronic hypoxia and that ALA treatment reversed these increases in lung tissues of chronic hypoxic mice. *P < 0.05 vs. control; #P < 0.05 vs. 21-day hypoxia; n = 6.
