| Primary Identifier | MGI:1860953 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Tnf |
| Inheritance Mode | Not Specified | Transmission | Germline |
| Strain of Origin | C57BL/6 | Is Recombinase | false |
| Is Wild Type | false |
| description | ES cell lines = BL/6-III and Bruce 4 |
| molecularNote | 905 base pairs, encompassing exons 2, 3, and a portion of exon 4, were replaced with a neomycin selection cassette. RT-PCR confirmed the absence of transcript in homozygous mutant mice. |