| Primary Identifier | MGI:2181784 | Allele Type | Targeted |
| Attribute String | Null/knockout, Reporter | Gene | Oprl1 |
| Transmission | Germline | Strain of Origin | 129S4/SvJae |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The gene was disrupted by replacement of an exon with a lacZ-neo cassette via homologous recombination. Northern blot analysis of brain from homozygous mutant animals confirmed the absence of gene expression. |