| Primary Identifier | MGI:7511830 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Ash1l |
| Transmission | Germline | Strain of Origin | C57BL/6 x 129 |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | LoxP sites were inserted around exon 4 and an FRT flanked neo cassette was inserted via homologous recombination. Flp-mediated recombination removed the neo cassette. Cre-mediated recombination removed exon 4. |