| Primary Identifier | MGI:3762618 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Grn |
| Transmission | Germline | Strain of Origin | 129P2/OlaHsd |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A 4.7 kb fragment encoding exons 2 - 13 was replaced with a PGK-neo-bpA cassette. RT-PCR analysis confirmed the absence of transcript in the brain, epididymis, testis, lung and liver. |