| Primary Identifier | MGI:2179534 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Lefty1 |
| Transmission | Germline | Strain of Origin | 129P2/OlaHsd |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | All 4 exons of this gene were replaced with a neo cassette via homologous recombination. Homozygous mutant animals were identified via Southern blot analysis. |