The expression construct contains a ubiquitous CAG promoter, lox2272 site, loxN site, loxP site, EGFP, lox2272 site, mCerulean, loxN site, mOrange, loxP site and mCherry. While EGFP expression is constitutive, the remaining reporters are only expressed following cre-mediated recombination. (J:188630)