| Primary Identifier | MGI:3577331 | Allele Type | Targeted |
| Attribute String | Modified regulatory region, Null/knockout | Gene | Rr318 |
| Transmission | Germline | Strain of Origin | 129S/SvEv x C57BL/6 |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The TEA (T early alpha) promoter was replaced with a loxP site flanked neomycin resistance gene cassette. The neo cassette was removed through subsequent cre-mediated recombination. No gross deficiency was found in alphabeta TCR expression or alphabeta T cell development in mutant mice. |