MGI:5430391 http://identifiers.org/mgd/MGI:5430391 R26Notch2 Gt(ROSA)26Sor<tm2(Notch2)Ryn> Conditional ready|Inserted expressed sequence Gt(ROSA)26Sor<tm2(Notch2)Ryni> targeted mutation 2, Ryuichi Nishinakamura