Vap (Vascular Associated Protein): A novel factor involved in erythropoiesis and angiogenesis

► A membrane protein Vap is specifically expressed in the intermediate cell mass. ► The knockdown of Vap induced the diminished number of erythrocytes. ► The knockdown of Vap caused the disorganization of trunk blood vessels. ► Vap is a novel protein involved in erythropoiesis and angiogenesis.