| Primary Identifier | MGI:3849852 | Allele Type | Targeted |
| Attribute String | Null/knockout, Reporter | Gene | Sox21 |
| Transmission | Germline | Strain of Origin | (C57BL/6NCrlj x CBA/JNCrlj)F1 |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The entire coding sequence was replaced with an in frame EGFP cDNA and a floxed pgk-neo cassette. Cre mediated recombination then removed the neo cassette. In situ hybridization analysis confirmed the absence of expression in the hair follicles from homozygous mice. |