Figure 7
Bar graph illustrating the vessel density (vessels/mm2) in the peri-infarct region of each experimental group. A total of five random fields of view (400×) bordering the infarct scar had vessel structures counted for two injection sites for each animal in each group. The number of capillaries for each animal was averaged and calculated per square millimeters and used to calculate the vessel density for each group +/- SD (control n = 6, mononuclear n = 5, stromal n = 7). Of the three groups, the mononuclear and stromal stem cell treated animals showed approximately a 1/3 increase in the density of blood vessels within the peri-infarcted region compared to control animals that received an infarct but no cells, but was not significant due to the small number of animals per group (F 2,15 = 1.30; p = 30).