Tg(CAG-Bgeo,-DsRed*MST)1Nagy

The transgene contains the coding sequence for the DsRed*MST variant red fluorescent protein and a polyadenylation signal downstream of a loxP-flanked lacZ/neomycin resistance fusion gene (Betageo) followed by three polyadenylation signals (STOP sequence); both coding sequences reside downstream of a chicken beta-actin promoter and a cytomegalovirus enhancer. Excision of the lacZ-STOP by Cre recombinase in doubly transgenic ES cells or mice leads to expression of DsRed*MST; use of a ubiquitously expressed cre transgene results in fluorescence of ES cells, embryos and adult mice. (J:109837)