| Primary Identifier | MGI:3641196 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Jchain |
| Transmission | Germline | Strain of Origin | 129P2/OlaHsd |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A construct was designed to replace the first exon with the DTA gene followed by a neomycin resistance cassette flanked by loxP sites. Northern blot failed to detect transcript in mutants. |