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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: J Allergy Clin Immunol. 2010 Mar;125(3):667–675. doi: 10.1016/j.jaci.2009.11.045

Figure 2. Evaluation of expression of human calprotectin (S100A8/A9) and human neutrophil elastase using ELISA in sinonasal tissue extracts.

Figure 2

A) Human S100A8/A9 protein levels in tissue extracts normalized to total protein. Polyp tissue from CRSwNP patients demonstrate a significant increase in human calprotectin when compared to normal tissue extracts (p <0.01). B) Linear regression analysis of matching S100A8/A9 and human neutrophil elastase samples demonstrate a significant correlation between the two proteins (p < 0.0001, r = 0.6577). C) Human neutrophil elastase protein levels in polyp tissue from CRSwNP patients are significantly increased when compared to normal tissue extracts. (p < 0.05).