Tg(Drd2-cre)44Gsat|ER44 transgene insertion ER44, GENSAT Project at Rockefeller University Transgene O Tg(Drd2-cre)ER44Gsat Tg(Drd2-cre)44Gsat http://identifiers.org/mgd/MGI:3836795 MGI:3836795 transgene ER44