| Primary Identifier | MGI:3526818 | Allele Type | Targeted |
| Attribute String | Null/knockout, Reporter | Gene | Efnb2 |
| Transmission | Germline | Strain of Origin | 129S4/SvJaeSor |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The H2B-GFP cDNA was inserted into exon 1 replacing a fragment of DNA including the start codon. RT-PCR analysis confirmed the absence of RNA expression in homozygous embryos. |