This strain was produced by microinjection of Col1a(5A)-Cre construct into embryos from SD-Tg(UBC-DsRedT3-emGFP)26Narl. As loxP-flanked DsRed is removed by Col1a(5A) promoter-driven Cre recombinase
Green fluorescence (Emerald9) expression is mostly in connective tissues and bone due to the expression pattern /level of the Cre recombinase. Other tissues remain expressing red fluorescence (DsRed monomer).