| Primary Identifier | MGI:5433550 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Mir133b |
| Transmission | Germline | Strain of Origin | (129X1/SvJ x 129S1/Sv)F1-Kitl<+> |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A loxP site was inserted upstream of the stem loop sequence and a FRT flanked neo cassette and loxP site were inserted downstream of the stem loop sequence. Recombinase mediated recombination removed the neo cassette and the entire stem loop structure. |