MGI:3582830 Kras<G12V> Kras<LSL> Kras<tm1Bbd> http://identifiers.org/mgd/MGI:3582830 K-ras<LSLG12Vgeo> Kras<LSLG12Vgeo> targeted mutation 1, Mariano Barbacid K<V12> K-ras<V12>