| Primary Identifier | MGI:2178112 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Tcf3 |
| Transmission | Germline | Strain of Origin | 129S4/SvJaeSor |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A PGK-neomycin resistance cassette replaced two adjacent exons that encode alternative basic-helix-loop-helix transcription factors E12 and E47. |