| Primary Identifier | MGI:2182410 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Dnmt3b |
| Transmission | Germline | Strain of Origin | 129S4/SvJae |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Targeting took place in J1 ES cells heterozygous for Dnmt3btm1Enl. A 2.4kb region encoding the PC and ENV motifs was replaced with a hygromycin selection cassette via homologous recombination. |