| Primary Identifier | MGI:4818343 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Igh |
| Transmission | Germline | Strain of Origin | 129S/SvEv x C57BL/6 |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A loxP site was inserted upstream of the Sgamma1 region and a floxed neo cassette was inserted downstream of the region. Cre mediated recombination removed the neo cassette and the Sgamma1 region. |