targeted mutation 18, Peter Mombaerts GFP-&gt;M71-LacZ(deltaM71) Reporter|Null/knockout deltaM71 Olfr151<tm18Mom> Olfr151<tm18(GFP)Mom> GFP-&gt;M71-GFP-IRES-taulacZ MGI:3047224 http://identifiers.org/mgd/MGI:3047224