| Primary Identifier | MGI:3819836 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Smad4 |
| Transmission | Germline | Strain of Origin | 129S/SvEv-Gpi1<c> |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A floxed PGK-hygro cassette was inserted into intron 3 and an additional loxP site was inserted into intron 4. Exon 4 and the selection cassette were removed either by transient cre expression in ES cells or by crossing chimeric mice containing the Smad4 |