FIG. 3.

(A) Organ weights of heart and various skeletal muscle tissues (lateral gastrocnemius, medial gastrocnemius, soleus, vastus lateralis, and diaphragm) showed no statistical difference between samples from 1-month-old homozygous floxed (+/+) and Gabpα skeletal-muscle-specific knockout (−/−) mice. (B) NADH staining of transverse cryosections from 1-month-old homozygous floxed (+/+) and Gabpα skeletal-muscle-specific knockout (−/−) mice showing no significant difference in fiber size or tissue integrity between the two genotypes. Type I, IIb, and IIa fibers are shown by dark, light, and intermediate staining, respectively. The images were taken at ×200 magnification.