Cre-only and double mutant littermates from #6 and #18 lines were
injected with Tamoxifen from postnatal day 14 to 18 for five consecutive days
and liver and kidney were harvested at postnatal day 25. Following X-gal
staining, the sections were counter-stained with Nuclear Fast Red. Liver
sections were captured at 10X and kidney sections at 20X magnification. (A,B)
Double mutants from line #6; (C,E,G) single mutants (CAGGCre) from line
#18; (D,F,H) double mutants from line #18. Note the
lacZ positive cells in liver (D,F) and kidney (H) of line
#18 double mutants.