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A: representative images of in situ zymography for gelatinolytic activity in the region near the infarct border. No clear gelatinolytic activity was detected in the sham heart. B: semiquantitative analysis of gelatinolytic activity showing that MI increased gelatinolytic activity, which was significantly blunted by Tβ4. n = 4–6 animals/group. *P < 0.005; †P < 0.05; ‡P < 0.01.
