| Primary Identifier | MGI:5486224 | Allele Type | Targeted |
| Attribute String | Conditional ready, No functional change | Gene | Fgf21 |
| Transmission | Germline | Strain of Origin | 129S6/SvEvTac |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A targeting vector was designed to insert a loxP site upstream of exon 1, followed by a second loxP site and a frt-flanked neomycin resistance (neo) cassette downstream of exon 3. Flp-mediated recombination removed the neo cassette. |