| Primary Identifier | MGI:3525615 | Allele Type | Targeted |
| Attribute String | Modified regulatory region, Null/knockout | Gene | Rr320 |
| Transmission | Germline | Strain of Origin | 129S4/SvJaeSor |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The 5'DNAse I hypersensitive sites 5 and 6 were replaced with a loxP site flanked hygromycin resistance gene cassette. Upon crossing with CMV-cre deleter mice, the hygro cassette was excised, leaving a single loxP site in place of 5' HS5 and 6. |
