transgene insertion 1, Ching-Kang Chen http://identifiers.org/mgd/MGI:3576654 iCre-75|Tg(Rho-cre)1Ck iCre-75 MGI:3576654 Transgene O Tg(Rho-icre)1Ck Tg(Rho-cre)1Ck transgene