| Primary Identifier | MGI:2177428 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | E2f3 |
| Transmission | Germline | Strain of Origin | 129P2/OlaHsd |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A floxed neomycin resistance cassette was inserted upstream of exon 3 and an additional loxP site was inserted downstream of the exon. Transient expression of Cre recombinase in ES cells excised both the neo cassette and exon 3. |