| Primary Identifier | MGI:4881915 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Mir21a |
| Transmission | Germline | Strain of Origin | 129S/SvEv |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A loxP site was inserted upstream of the coding sequence, and an FRT-flanked neo cassette with a 3' loxP site was inserted downstream of the coding sequence. Cre-mediated recombination removed the coding sequence and the neo cassette. |