Fig. 7. Histology and vascularization of muscle in ischemic hindlimbs 14 days after iliac artery ligation. Hematoxylin and eosin stained 7 µm transverse sections of muscle in the lower hindlimb at the level of the distal gastrocnemius muscle. Sections were incubated with BSLB₄ and reacted with Vector Red to visualize blood vessels (bright red). (A-C) A limb treated with progenitor cells. (D) A fibroblast-treated limb. (A) Healthy muscle. (B) Recovering muscle. (C) Severely injured recovering muscle with inflammatory infiltrate. (D) Necrotic muscle. Scale bar, 50 µm.