| Primary Identifier | MGI:3624263 | 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 | Exon 1 was removed via transient cre expression in ES cells. Western blot analysis shows that the predominant wild-type protein was absent in mutant ES cells. |