| Primary Identifier | MGI:3698402 | Allele Type | Targeted |
| Attribute String | Modified regulatory region, Null/knockout | Gene | Rr98 |
| Transmission | Germline | Strain of Origin | 129P2/OlaHsd |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Part of Cd8a enhancer 8ii, specifically cluster IV DNaseI hypersensitivity sites 4 and 5 referred to as C8ii (CIV-4,5), was deleted by homologous recombination in ES cells, leaving a neomycin selection cassette in place of the 8ii enhancer. |