| Primary Identifier | MGI:5443836 | Allele Type | Targeted |
| Attribute String | Null/knockout, Reporter | Gene | Erg |
| Transmission | Germline | Strain of Origin | 129S6/SvEvTac |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Exon 3 was replaced with a lacZ-neo cassette via homologous recombination. This mutation should abolish expression of isoforms 1 - 4 while retaining expression of isoforms 5 - 7. Strong LacZ expression is seen only in articular cartilage. |