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Figure 2 Plasma levels of CRP (Panel A) and SAA (Panel B) at the time of hospital admission. On admission, within 3 h from onset of prolonged chest pain, patients with preinfarction UA had significantly higher levels of CRP and SAA than patients with unheralded MI (all p < 0.001). CRP = C-reactive protein; MI = myocardial infarction; SAA = serum amyloid A protein; UA = unstable angina.