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Figure 2 Multi-focal macrophage density results. (a) Bar graph showing macrophage density at culprit and remote sites for each clinical syndrome. Standard error bars are represented. Within each clinical syndrome no significant difference was found between the macrophage content at culprit and remote lesions. (b) Scatter plot of macrophage density in culprit lesions relative to that at remote sites within the same patient. Linear regression equation, Pearson's correlation coefficient (r), and p value are depicted in the insert. ACS = acute coronary syndrome; SAP = stable angina pectoris; STEMI = ST-segment elevation myocardial infarction.