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Ratio of fluorescence at 340 to 380 nm (F340/F380) versus time at 1 Hz. The net change in the ratio was unaltered (A), whereas the time to peak ratio (B) and time to half-decay of the ratio (C) were significantly reduced in isolated myocardial strips from the collateral-dependent region of Ex animals. Values are means ± SE; 8–13 pigs/group. *P ≤ 0.05.
