(A) Elastica van Gieson (EVG) and Masson’s trichrome (MT) staining were performed using horizontally cut hearts from WT and KO mice. An enlarged view is shown on the right. Scale bars represent 1 mm. Arrow indicates the site of calcification. (B) EVG and MT staining images of lungs from WT and KO mice. An enlarged view is shown on the right. Scale bars represent 500 μm.