| Primary Identifier | MGI:2148177 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Mstn |
| Transmission | Germline | Strain of Origin | (129X1/SvJ x 129S1/Sv)F1-Kitl<+> |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Replacement of the sequences encoding the entire C-terminal region of the protein with a neomycin cassette. |