| Primary Identifier | MGI:2158494 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Igh-8 |
| Transmission | Germline | Strain of Origin | 129P2/OlaHsd |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A 54 bp DNA fragment of exon CH1 was replaced with a neomycin selection cassette. ELISA assays demonstrated that no soluble IgG3 protein was detectable in serum derived from homozygous mice. |