MGI:2448783 Grik4-Cre G32-4 Cre O G32-4 Cre|KA1-Cre|Grik4-Cre KA1-Cre transgene http://identifiers.org/mgd/MGI:2448783 Transgene Tg(Grik4-cre)G32-4Stl transgene insertion G32-4, Susumu Tonegawa