| Primary Identifier | MGI:2386759 | Allele Type | Targeted |
| Attribute String | Conditional ready, No functional change | Gene | Esr1 |
| Transmission | Germline | Strain of Origin | 129S2/SvPas |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | LoxP sites flanking exon 3 and a downstream TK-neo cassette were introduced to the gene via homologous recombination. |