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Figure 2 Regional blood flow. The asterisk denotes the significant difference in flows between MO and infarcted (microvasculature intact) regions at the same timepoint. Microvascular obstruction and infarcted regions had similar baseline flows. At occlusion, flow to MO regions was lower than to regions that become infarcted but whose microvasculatures remain intact (p = 0.0002). With reperfusion, blood flow in both regions returns to baseline. At day 2, MO regions have lower blood flow than infarcted areas (p < 0.0001). At day 9, MO regions continue to have flow that is lower than infarcted areas (p < 0.0001). Within each region, flow rates at days 2 and 9 are similar (p = NS).