MGI:5558024 targeted mutation 1, Hanno Hock R26<M2rtTA>;Col1a1<TetOP-Cre> TetOP-Cre R26-M2rtTA::TetOP-Cre http://identifiers.org/mgd/MGI:5558024 Recombinase|Inducible Col1a1<tm1(tetO-cre)Haho>