| Primary Identifier | MGI:7791012 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Cyp27b1 |
| Transmission | Germline | Strain of Origin | C57BL/6 |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A loxP site was inserted into intron 6 and an FRT site flanked neomycin resistance gene cassette and a second loxP site downstream of the last exon. The neo cassette was removed through subsequent Flp-mediated recombination and exons 7-9 were deleted through subsequent Cre-mediated recombination. |