| Primary Identifier | MGI:3714992 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Ar |
| Transmission | Germline | Strain of Origin | 129S4/SvJaeSor |
| Is Recombinase | false | Is Wild Type | false |
| description | ES cells = FWB2 (129S4/SvJaeSor) |
| molecularNote | This null mutation was produced by breeding mice bearing Ar |