| Primary Identifier | MGI:2384029 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Fgg |
| Transmission | Germline | Strain of Origin | (129X1/SvJ x 129S1/Sv)F1-Kitl<+> |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The entire coding region of the endogenous locus was replaced with a neomycin selection cassette. Western blot analysis of blood plasma showed the absence of the gamma polypeptide, preventing the formation of the fibrinogen heterodimer in homozygous mutant mice. |