| Primary Identifier | MGI:5140136 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Cygb |
| Transmission | Germline | Strain of Origin | Not Specified |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The coding region of exon 1 including the translation initiation site was replaced with a floxed pgk-neo cassette via homologous recombination. RT-PCR, immunoblot, and immunohistochemical analysis confirmed the absence of expression in livers from homozygous mice. |