http://identifiers.org/mgd/MGI:5006835 Ceres MM-4 Tg(IghmHyHEL10,IgkHyHEL10)4Ccg Inserted expressed sequence MM4 Tg(IghmMM)4Rbr Tg(IghelM)Ccg transgene insertion 4, Christopher C Goodnow MGI:5006835 IgM-only anti-HEL transgene