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. 2020 Sep 2;9(10):3. doi: 10.1167/tvst.9.10.3

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Figure 3. — Scatterplot of Spearman's correlation between PEA and ECL platforms for proteins detected in at least 70% of specimens. Y-axis: protein levels measured with the PEA platform, in linear normalized protein expression (NPX) units; X-axis: protein levels measured with the ECL platform, in pg/mL. ECL assay panels in parentheses: PI, proinflammatory (control, n = 17; PDR, n = 20); CY, cytokine (control, n = 17; PDR, n = 20); CH, chemokine (control, n = 17; PDR, n = 19); VI, vascular injury (control, n = 17; PDR, n = 19). Controls (open circles) and PDR (closed triangles). Regardless of the platform panel, there is a strong correlation (Spearman's coefficient r_s > 0.8, P < 0.001) between protein levels detected by assays from both platforms.