| Primary Identifier | MGI:2388164 | Allele Type | Targeted |
| Attribute String | Null/knockout, Reporter | Gene | Il4 |
| Transmission | Germline | Strain of Origin | 129P2/OlaHsd |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | This allele is a derivative of Il4tm1Wep. The floxed neo cassette was removed by mating mutant animals to a transgenic line expressing cre recombinase in the oocytes, leaving behind a loxP site and the GFP knock-in cassette in place of exon 1. |