However, Col1a2 Cre has recently been applied successfully to target fibroblasts during myocardial infarct healing (Duan et al. 2012), and in future, this approach will provide a means for testing the importance of Hsd11b1 in fibroblasts, and other mesenchymal cells, post MI. Here, COL1A2 is linked to myocardial infarction.