dLck-hcre<3779> transgene insertion 3779, Nigel Killeen Tg(Lck-cre)3779Nik MGI:2655491 http://identifiers.org/mgd/MGI:2655491 transgene dLck-hcre<3779>|Tg(Lck-cre)3779Nik O Tg(Lck-icre)3779Nik Transgene