The heterogeneity in macrophage localization emphasizes the need to identify how and why macrophages are recruited to specific locations within microvascular networks. A) Mouse adipose tissue stimulated by a ligation in a feeding arter (Red: Blood vessels, Green: Macrophages). B) Mouse retina stimulated by IL-1β. (Red: Blood vessels, Blue: M2a Macrophages, Green: Macrophages). C) Mouse ear tissue stimulated by a burn injury (Red: Perivascular cells, Blue: Blood vessels, Green: Macrophages). D) Rat mesentery tissue stimulated by chronic hypoxia (Red: Blood vessels, Green: Macrophages). E) Mouse spinotrapezius muscle (Red: Perivascular cells, Blue: Blood vessels, Green: Macrophages). F) Mouse spinotrapezius muscle (Red: Smooth muscle cells, Blue: Mast cells, Green: Macrophages). Scale bars = 50 microns.