A bidirectional CAG promoter drives two open reading frames predicting: NES-DEVDG-PEST-DEVDG-(mCerulean1-155)-(N-intein) and (C-intein)-(mCerulean156-239)-DEVDG-PEST-DEVDG-NLS. There are approximately 12 copies of the transgene in hemizygotes. (J:94077)