| Primary Identifier | MGI:3839670 | Allele Type | Targeted |
| Attribute String | Conditional ready, No functional change | Gene | Esr1 |
| Transmission | Germline | Strain of Origin | 129X1/SvJ |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A loxP site was inserted upstream of exon 3, and a floxed self-excising neo cassette was inserted downstream of exon 3. The neo cassette sucessfully self-excises leaving exon 3 floxed. |