| Primary Identifier | MGI:6831626 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Sox9 |
| Transmission | Germline | Strain of Origin | Not Specified |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | An FRT-flanked neomycin resistance cassette inserted upstream of the translation start site in exon 1. Flp-mediated recombination removed the selection cassette. |