| Primary Identifier | MGI:6368127 | Allele Type | Targeted |
| Attribute String | Modified regulatory region | Gene | Rr27 |
| Transmission | Germline | Strain of Origin | (129X1/SvJ x 129S1/Sv)F1-Kitl<+> |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A floxed neomycin resistance gene cassette was inserted upstream of the 5' ICR segment. An additional loxP site was inserted downstream of the 5' ICR segment. Cre-mediated recombination removed the selection cassette and 5' ICR segment. |