| Primary Identifier | MGI:3575087 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Sema4a |
| Transmission | Germline | Strain of Origin | Not Specified |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | 1.8-kb of genomic sequence containing the first exon with the initiation codon was replaced with a neo cassette. RT-PCR analysis of total RNA from the spleen and cell surface staining of dendritic cells (DC) confirmed the lack of expression. |