| Primary Identifier | MGI:4441483 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Fntb |
| Transmission | Germline | Strain of Origin | 129P2/OlaHsd |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Two loxP sites were inserted 1kb upstream and 1kb downstream of exon 1, followed by a floxed neo cassette. Neo cassette and exon1 with the promoter sequence were deleted by sequential Cre-mediated recombination. |