| Primary Identifier | MGI:3775943 | Allele Type | Targeted |
| Attribute String | Null/knockout, Reporter | Gene | Isx |
| Transmission | Germline | Strain of Origin | (C57BL/6NCrlj x CBA/JNCrlj)F1 |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A lacZ-neo cassette was inserted into exon 1 replacing a portion of it. The neo cassette and the entire lacZ-neo cassette were flanked with recombination sites (exact kind not specified). The absence of transcript was confirmed by northern blot analysis on jejunum extracts. This is a null allele. |