| Primary Identifier | MGI:3051214 | Allele Type | Targeted |
| Attribute String | Null/knockout, Reporter | Gene | Efnb2 |
| Transmission | Germline | Strain of Origin | Not Specified |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The sequence encoding most of the cytoplasmic domain (amino acids 264-336) was replaced with an in-frame floxed lacZ cassette, and an frt-flanked PGK-neo. X-gal staining demonstrated LacZ was expressed in mutants. |