Cardiovascular Research Center Massachusetts General Hospital Harvard Medical School RESEARCH INTEREST BMP/TGF-BETA/ACTIVIN/GDF SIGNALING AND PHARMACOLOGIC MODULATION CARDIOPULMONARY PHYSIOLOGY AND PULMONARY ARTERIAL HYPERTENSION (PAH) BONE BIOLOGY, HETEROTOPIC OSSIFICATION AND FIBRODYSPLASIA OSSIFICANS PROGRESSIVA (FOP) MOLECULAR IMAGING OF CARDIOPULMONARY DISEASE ANEMIA AND IRON HOMEOSTASIS VASCULAR CALCIFICATION