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Figure 4 MCP-1 detection by immunohistochemistry in arterial sections. Top, Photomicrographs of arterial sections stained with an anti–MCP-1 antibody. Both the neointima and the media showed staining for MCP-1. A representative section of an untreated animal is shown in A and of an atorvastatin treated rabbit in B. Control arteries showed no staining for MCP-1 (not shown) (magnification x400). Bottom, Closed bars represent the mean area stained for MCP-1 in the untreated animals and open bars the mean area stained in treated animals. Data are the mean ± SD of seven treated and nine untreated rabbits. *p < 0.01 vs. untreated and **p < 0.05.