| Primary Identifier | MGI:5470225 | Allele Type | Targeted |
| Attribute String | Modified regulatory region | Gene | Rr96 |
| Transmission | Germline | Strain of Origin | 129 |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A tetO sequence followed by a loxP site and then an FRT flanked neomycin selection cassette were inserted immediately upstream of the Cd4 silencer sequence in intron 1. A second loxP site was inserted immediately downstream of the silencer. The selection cassette was subsequently removed by flp recombinase expression. |