| Primary Identifier | MGI:4453827 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Il22 |
| Transmission | Germline | Strain of Origin | Not Specified |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Coding exons 1a, 1b, 2, and a part of exon 3 were replace with a neo cassette by homologous recombination. Absence of RNA and protein was confirmed by RT-PCR and ELISA. |