| Primary Identifier | MGI:3609228 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Mmp9 |
| Transmission | Germline | Strain of Origin | Not Specified |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The locus was disrupted upon the insertion of a pgk-neo in place of exons 1-12. Western blot of mutant hearts confirmed absence of protein. |