| Primary Identifier | MGI:2655321 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Cd40 |
| Transmission | Germline | Strain of Origin | 129S4/SvJae |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The gene was disrupted by replacement of exons 7, 8, and 9 with a neomycin resistance cassette via homologous recombination. |