β-galactosidase expression activated by Nes-cre in P7 muscle
 A) P7 skeletal muscle at 2X magnification. β-gal expression is strong but not specific to any cell types. |
 B) Muscle from different P7 pup, at 20X magniifcation. For this section β-gal expression is spotty and doesn't appear real. |
| Note: This type of inconsistent β-gal expression was observed, regardless of the sex of the pups or the mode of inheritance of Nes-cre. Both samples were genotyped positive for cre and lacZ. | |
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