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bFGF increases angiogenesis in vivo. Measurement of capillary density by vWF immunohistochemistry in the peri-infarct myocardium one week after cell transplantation, and quantitation. Capillaries are stained dark brown and nuclei are stained blue. Consecutive 10 sections and 10 random ×200 fields per section were counted. *P<0.05, with comparisons indicated by lines. bFGF, basic fibroblast growth factor; CSC, cardiac stem cells; Akt, protein kinase B.
