| Primary Identifier | MGI:2180869 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Cel |
| Transmission | Germline | Strain of Origin | 129S4/SvJae |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The promoter and exons 1 through 3 were replaced with a neomycin selection cassette. Enzymatic activity was undetectable via radiometric analysis of the pancreas, breast milk, and plasma of homozygous mutant mice. |