| Primary Identifier | MGI:5688350 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Jak1 |
| Transmission | Germline | Strain of Origin | 129X1/SvJ |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | This allele is a derivative of Jak1tm1Kuw in which the loxP-flanked exon 2 was deleted in the germline by Cre-mediated recombination, leaving the frt-flanked PGK-neo in the intron following the floxed region. |