Null/knockout deletion, Chr 2, John L R Rubenstein 1 Dlx1/2- Dlx1&2-null Del(2Dlx1-Dlx2)1Jlr D1x-1&2-D15.6/neo Dlx1/Dlx2<tm2Jlr> http://identifiers.org/mgd/MGI:3586512 MGI:3586512