| Primary Identifier | MGI:2683665 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Icos |
| Transmission | Germline | Strain of Origin | 129S4/SvJae |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Exon 2, which contains an immunoglobulin -V-like sequence, was replaced with a neomycin resistance gene. Absence of gene product was demonstrated immunologically. |
