Expression of BMPER in human atherosclerotic coronary artery. Specimens of a coronary artery containing plaque with microcalcification from a 59-year-old male with diabetes mellitus, hypertension and a smoking habit were subjected to immunostaining of BMPER (A) or αSMA (B), and alizarin red staining (C). A, adventitia; I, intima; M, media.