| Primary Identifier | MGI:1857246 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Spn |
| Transmission | Germline | Strain of Origin | 129S4/SvJae |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A 300 nucleotide fragment encoding a portion of the extracellular domain and all of the transmembrane domain was deleted by via homologous recombination strategies. FACS analysis of splenocytes isolated from homozygous mutant mice showed a lack of the encoded protein on the cell surface. |