Figure 1From: Determination of inflammatory biomarkers in patients with COPD: a comparison of different assays Concentrations of CRP and SAA measured by the two analytical assays (nephelometry and ELISA) in COPD patients and healthy controls. Panel a) CRP by nephelometry. Panel b) CRP by ELISA. Panel c) SAA by nephelometry. Panel d) SAA by ELISA.Back to article page