| Primary Identifier | MGI:5447741 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Serpinb3a |
| Transmission | Germline | Strain of Origin | 129 |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A targeting vector containing a NEO cassette replaced most of exon 8. RT-PCR confirmed the absence of transcript expression. |