transgene MGI:3758078 Tg(dlx6a-cre)1Mars http://identifiers.org/mgd/MGI:3758078 Transgene transgene insertion 1, Marc Ekker Dlx5/6-Cre Tg(dlx6a-cre)1Mars|Dlx5/6-Cre Tg(dlx6a-cre)1Mekk O