| Primary Identifier | MGI:5903477 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Poln |
| Transmission | Germline | Strain of Origin | 129 |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | An FRT-flanked neomycin resistance cassette with a 5' loxP site was inserted upstream of exon 2. Flp-mediated recombination removed the selection cassette and left exon 2 floxed. Cre-mediated recombination removed exon 2. |