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Figure 5 Mean infarct thickness, infarct thinning ratio, infarct expansion index, circumferential epicardial infarct arc length (S_ep), long/short axis ratio, and end-diastolic volume as percentages of three-day values. Absolute values at three days averaged 9.3 ± 1.0 mm, 1.34 ± 0.06, 2.33 ± 0.25, 74 ± 3.1 mm, 1.42 ± 0.06 and 49 ± 3.4 ml, respectively. Solid lines = animals completing eight weeks; dashed lines = animals dying between four and eight weeks.