transgene insertion 1, I Pierre Chambon Transgene O K5-Cre|K5-Cre-ER<T> MGI:2177424 K5-Cre Tg(Krt1-5-cre/ERT)1Ipc http://identifiers.org/mgd/MGI:2177424 transgene K5-Cre-ER<T>