Macrophages: New Frontier in Cardiovascular Medicine464STAT4 deficiency exacerbates atherosclerosis by promoting mobilization of myeloid cells, polarization of M1 macrophages and formation of foam cells465Effects of DPP4 inhibition on cardiac regeneration and macrophage balance in a mouse model of HHT-1466Myeloid cell regulation by CD200 signalling in atherosclerosis