Figure 4.
Skeletal muscle abnormalities. A: WT quadriceps femoris. B and C: Triceps brachii with angulated fibers (black arrows) of Kel−/−Xk−/− (B) and Xk−/− (C) mice. D: Quadriceps femoris of Xk−/− exercised mice with angulated fibers (black arrows) and internalized nuclei (white arrow). H&E stain. Sections are 5 μm thick. Original magnification: ×200 (A, B, and D); ×400 (C).