transgene Col2a1-CreER<T2>|Tg(Col2a1-cre)1Dic MGI:3698310 Tg(Col2a1-cre)1Dic Col2a1-CreER<T2> http://identifiers.org/mgd/MGI:3698310 O Transgene transgene insertion 1, Di Chen Tg(Col2a1-cre/ERT2)1Dic