| Primary Identifier | MGI:3586299 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Csf2 |
| Transmission | Germline | Strain of Origin | 129S2/SvPas |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A hygromycin resistance cassette replaced exons 3 and 4 in an ES cell line in which the Il3 gene had already been targeted (MGI:2446538). Absence of protein was demonstrated immunologically. |