| Primary Identifier | MGI:1857144 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Cd4 |
| Transmission | Germline | Strain of Origin | 129S2/SvPas |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A neomycin resistance cassette was inserted into exon 5. Flow cytometry analysis demonstrated that the protein was absent from the cell surface of thymocytes and lymph node cells in homozygous mice. |