| Primary Identifier | MGI:4880750 | Allele Type | Targeted |
| Attribute String | Modified regulatory region | Gene | Il4 |
| Transmission | Germline | Strain of Origin | (129 x C57BL/6)F1 |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The HS2 enhancer element within intron 2 was replaced with a floxed neo cassette that was subsequently removed by cre-mediated recombination. |