MGI:3574754 O transgene insertion 1, Barbara E Kream transgene Tg(Col1a1-cre)1Bek http://identifiers.org/mgd/MGI:3574754 Col 3.6-Cre|3.6-Col1a1-Cre Transgene 3.6-Col1a1-Cre Col 3.6-Cre