alphaMyHC-Cre alphaMhc-Cre MHC-Cre transgene insertion 2182, Michael D Schneider Tg(Myhca-cre)2182Mds http://identifiers.org/mgd/MGI:2386742 MHCalphaCre MHCcre Recombinase Tg(Myh6-cre)2182Mds alpha-MHC-Cre<+> MGI:2386742 MCH-cre