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Figure 1 (A) Risk region, expressed as percent total left ventricular (LV) weight, for adult, middle-aged and old rabbits. Results of two-way analysis of variance: p = 0.79 for age; p = 0.94 for treatment; and p = 0.40 for age x treatment. (B) Necrosis, expressed as percent risk region, for adult, middle-aged and old rabbits. Results of two-way analysis of variance: p = 0.05 for age; p < 0.01 for treatment; and p = 0.90 for age x treatment. **p < 0.01 versus matched control group. Solid bars = control groups; open bars = PC groups.