| Primary Identifier | MGI:2182414 | 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 homozygous for Dnmt3atm1Enl and heterozygous for Dnmt3btm4Enl. A 2.4kb region encoding the PC and ENV motifs was replaced with a puromycin selection cassette. |