Tg(Col1a2-cre/ESR1)71Pcn Col1a2-Cre-ER(T) O Tg(Col1a2-cre/ESR1)7Cpd http://identifiers.org/mgd/MGI:3785759 transgene Tg(Col1a2-cre/ERT)7Cpd Col1a2 Cre-ER MGI:3785759 Transgene Tg(Col1a2-cre/ERT,-ALPP)7Cpd transgene insertion 7, Christopher P Denton Tg(Col1a2-cre/ESR1)7Cpd|Col1a2-Cre-ER(T)|Tg(Col1a2-cre/ESR1)71Pcn|Tg(Col1a2-cre/ERT)7Cpd|Col1a2 Cre-ER