Figure 8. Photomicrograph shows the ultrastructure of the gastrocnemius muscle after femoral arterial removal. Myofibers display irregular expansions of the sarcolemma (large asterisks). Basal laminar thickening is observed in the endomysial capillaries (small asterisk). Collagen fibers (F) are abundant in the interstitial space. (Lead citrate and uranyl acetate stain; original magnification, x12,500.)