| Primary Identifier | MGI:5561219 | Allele Type | Targeted |
| Attribute String | Conditional ready, No functional change | Gene | Oprm1 |
| Transmission | Germline | Strain of Origin | 129 |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A loxP site was inserted upstream of exon 2. A floxed hygromycin resistance cassette was inserted downstream of exon 3. Cre-mediated recombination removed the selection cassette and left exons 2 and 3 floxed. |