| Primary Identifier | MGI:3039290 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Efnb1 |
| Transmission | Germline | Strain of Origin | 129S4/SvJaeSor |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Cre-mediated recombination removes the floxed exons 2-5 in Ephb1tm1Sor, leaving a PGK-neo-bpA cassette flanked by FRT sites. Western blot of embryo lysates confirmed absence of the endogenous protein. |