Figure 5

Immunohistochemistry results of CD31 expression in five different treatment groups. The number of blood vessels in transverse sections of the dog ischemic myocardium harvested at day 28.(Scale bar = 20 μm). (a) Expression of CD31 in the HGF+MB/US group (original magnification ×400). (b) Expression of CD31 in the MB/US group (original magnification ×400). (c) Expression of CD31 in the HGF+US group (original magnification ×400). (d) Expression of CD31 in the HGF group (original magnification ×400). (e) Capillaries in the control group. (f) The capillary density of HGF+MB/US group was the highest among all groups ( ± sd, n = 6). *P < 0.01 vs. other five groups; **P < 0.01 vs. HGF +US group, HGF alone and HGF +MB group; *** P < 0.01 vs. HGF alone and HGF +MB group; # P > 0.05 vs. HGF alone group.