| Primary Identifier | MGI:5489765 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Has2 |
| 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 exon 2. An FRT-flanked neo cassette with a 3 loxP site was inserted downstream of exon 2. Flp-mediated recombination removed the neo cassette and left exon 2 floxed. Cre-mediated recombination removed exon 2. |