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Figure 1 Course of C-reactive protein (median and 95% confidence interval of the median) from baseline to 48 h postintervention after femoropopliteal balloon angioplasty (n = 210) and after lower limb angiography (n = 103). Carriers and non-carriers of the class S allele in the heme oxygenase-1 (HO-1) gene promoter were compared. PTA = percutaneous transluminal angioplasty. Diamonds = carriers of the class S allele; squares = non-carriers of the class S allele.