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Figure 7 Anti--smooth muscle actin immuno-stain (x100 magnification). (A) In the regions adjacent to the scar, significant increase in arterial density was demonstrated only in a rat from HGF-US/MB but not in the other groups (top). These groups showed similar vascular density in the remote non-infarcted regions (bottom). Bar graphs compare the count of vessels per high-power field (HPF) among the groups for the regions adjacent to the infarction scar (B) and for the remote non-infarcted regions (C). *p < 0.05 versus pVax1-US/MB, HGF-US, and HGF-alone. Abbreviations as in Figure 3.