| Primary Identifier | MGI:3045971 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Hoxb4 |
| Transmission | Germline | Strain of Origin | (129X1/SvJ x 129S1/Sv)F1-Kitl<+> |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Transient cre activity excised floxed exons 1 and 2 and a floxed neo, leaving a single loxp site. RT-PCR demonstrated absence of transcript in mutant mice. |