Conditional ready|Constitutively active|Reporter|Inserted expressed sequence ROSA<MEK1*> http://identifiers.org/mgd/MGI:4430550 MEk1DD R26Stop-flox-MEK1DD MGI:4430550 Gt(ROSA)26Sor<tm8(Map2k1*,EGFP)Rsky> R26Stop<FL>MEK1DD R26Stop flox MEK1DD targeted mutation 8, Klaus Rajewsky