http://identifiers.org/mgd/MGI:3803568 R26<Pax3> Gt(ROSA)26Sor<tm2(Pax3)Joe> MGI:3803568 Conditional ready|Inserted expressed sequence targeted mutation 2, Jonathan A Epstein ROSA<Pax3> Rosa26-loxP-stop-loxP-Pax3-cDNA