| Primary Identifier | MGI:5519055 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Lin28b |
| Transmission | Germline | Strain of Origin | (C57BL/6 x 129S4/SvJae)F1 |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A loxP site was inserted upstream of exon 2. An FRT-flanked neomycin resistance cassette with a 5' loxP site was inserted downstream of exon 2. Cre-mediated recombination removed exon 2. Western blot analysis confirmed the absence of protein expression in embryonic stem cells. |