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. 2007 Oct;130(4):389–398. doi: 10.1085/jgp.200709783

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Copyright © 2007, The Rockefeller University Press

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Figure 5. — Cellular ATP levels as a function of oxygen concentration. Data are means of 6–9 experiments ± SEM. ** denotes P < 0.01 and * denotes P < 0.05 compared with the levels at 7 min for pO₂ of 20 kPa.