http://identifiers.org/mgd/MGI:3640469 V1rb2<dv> DeltaV GFPdeltaV1rb2-IRES-TauLacZ MGI:3640469 targeted mutation 3, Peter Mombaerts (DeltaVri2) GFP-IRES-taulacZ DeltaVRi2 Vmn1r49<tm3Mom>