| Primary Identifier | MGI:3721239 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Cd28 |
| Transmission | Germline | Strain of Origin | 129S4/SvJae |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A PGK-hygro cassette replaced a 3 kb region encompassing portions of exon 2 and exon 3. The deleted region encoded parts of a IgV-like domain and a transmembrane domain. Fluorescence-activated cell sorting (FACS) analysis showed an absence of protein on naive CD4 T cells isolated from the lymph nodes of homozygous mutant mice. Targeting was performed on an embryonic stem cell clone that was heterozygote for a targeted mutation of Ctla4tm1Shr. |
