β-galactosidase expression activated by B6.EIIa-cre at postnatal day 0
 A) The thorax of a P0 pup at 2X magnification. Strong β-gal expression is observed throughout. |
 B) The thorax of a different P0 pup at 2X magnification. Weaker and more variable β-gal expression is observed. |
 C) The abdominal region of the P0 pup from A, at 2X magnification. |
 D) The abdominal region of the P0 pup from B, at 2X magnification |
 E) The caudal region of the pup from A, at 2X magnification. |
 F) The caudal region of the pup from B, at 2X magnification. |
 F) β-gal expression is strong in the lung and liver for the pup shown in A (10X magnification). |
 G) β-gal expression is weaker and much more variable iin the heart, lung and liver for the pup shown in B (10X magnification). |
 G) The spinal cord of the pup from A also shows strong β-gal expression (10X magnification). |
 H) The spinal cord of the pup from B shows similar variable β-gal expression (10X magnification). |
| Note: Variable patterns of β-gal expression was observed with P0 pups in the same litter. The sex of these pups were not determined. | |
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