| Primary Identifier | MGI:3710412 | Allele Type | Targeted |
| Attribute String | Conditional ready, No functional change | Gene | Spen |
| Transmission | Germline | Strain of Origin | (C57BL/6NCrlj x CBA/JNCrlj)F1 |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | One loxP site was inserted in the BglII site of intron 10 and a floxed Pgk Neomycin resistance cassette was inserted in the NdeI site of intron 11. |