CAG-MerCreMer MGI:4430072 transgene insertion 1, Gyohei Egawa Tg(CAG-cre/Esr1*)1Egwa transgene Tg(CAG-cre/Esr1)1Egwa http://identifiers.org/mgd/MGI:4430072 Transgene CAG-MerCreMer|Tg(CAG-cre/Esr1)1Egwa O