Skeletal muscle-specific expression of PGC-1α-b induced angiogenesis in skeletal muscle. (A) Transverse frozen sections of TA from wild-type (Wt) and PGC-1α-b transgenic mice at 10–11 weeks of age were immunostained for CD31 (endothelial-specific PECAM). Representative immunostains in the superficial region is shown. (B) Quantification of CD31-positive capillaries/mm 2 and capillaries per individual myofiber in superficial and deep regions (n = 3 per group). Data are presented as mean ± SE. *, P
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