transgene insertion 1, Douglas A Melton transgene http://identifiers.org/mgd/MGI:2684325 Transgene MGI:2684325 O Ngn3-Cre Ngn3-Cre|Tg(Neurog3-cre/Esr1)1Dam Tg(Neurog3-cre/Esr1)1Dam Tg(Neurog3-cre/Esr1*)1Dam