CCR2 and atherosclerosis: Blood monocytes can be divided into two subsets [8–10]: the CCR2+ “inflammatory” monocytes, the blood-born precursors of inflammatory macrophages and inflammatory dendritic cells, and the CCR2− “non-inflammatory” monocytes that patrol the vasculature [10, 11] but also participate in the inflammatory reaction in certain affections, such as atherosclerosis [12].