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Figure 1 CRP levels were significantly higher on admission in group A2 (25 mg/L, p < 0.0001) than in group A1 (4.5 mg/L) and groups B1 and B2 (3.3 and 2 mg/L respectively). The high CRP levels significantly decreased in group A2 to 7.8, 0.2 to 32.2 mg/l in sample 2 and to 6.8, 0.2 to 26.5 mg/l in sample 3 (p < 0.0001 vs. sample 1). In control groups B1 and B2, CRP levels were lower than in unstable angina groups (A1 and A2, p < 0.0001) and did not change during the study. The x-axis represents the time of sampling: 1 = admission; 2 = after 7 to 15 days; 3 = after 6 months; A1 = resolving UA, n = 19; A2 = refractory UA, n = 16; B1 = stable angina, Canadian class I to II, n = 20; B2 = stable angina, Canadian class III to IV, n = 15.