β-galactosidase expression activated by B6.EIIa-cre in P7 muscle
 A) Skeletal muscle from P7 female, at 10X magnification. |
 B) Skeletal muscle from P7 male, at 20X magnification. |
| Note: Any differences between β-gal expression for the male and female samples are just initial observations. No quantification was conducted to determine if a true sex-based difference is present with the B6.EIIa-cre line. Compare to adult muscle. | |
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