| Primary Identifier | MGI:5516489 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Pip |
| Transmission | Germline | Strain of Origin | 129S/SvEv |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A neomycin resistance cassette replaced exon 2. Western blot analysis confirmed the absence of protein expression in the saliva and tears. |