| Primary Identifier | MGI:5496874 | Allele Type | Targeted |
| Attribute String | Conditional ready, No functional change | Gene | Twnk |
| Transmission | Germline | Strain of Origin | C57BL/6 |
| Is Recombinase | false | Is Wild Type | false |
| description | ES cells = C57BL/6-derived |
| molecularNote | Exons II, III and IV were flanked by loxP sites. An F3-flanked puromycin resistance cassette was inserted into intron IV. Mutant mice were mated with Flp transgenic animals to delete the puro marker to generated a floxed mouse line. |