| Primary Identifier | MGI:3687498 | Allele Type | Targeted |
| Attribute String | Modified regulatory region, Null/knockout | Gene | Rr159 |
| Transmission | Germline | Strain of Origin | 129P2/OlaHsd |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The loxP site flanked neomycin resistance gene cassette in place of the entire 808 bp 3' enhancer region (3'Ekappa), downstream of the Igk cluster, was removed via cre-mediated recombination. |