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Measurement of Circulating Cytokines and Immune-Activation Markers by Multiplex Technology in the Clinical Setting: What Are We Really Measuring?

Measurement of circulating cytokine levels can provide important information in the study of the pathogenesis of disease. John L. Fahey was a pioneer in the measurement of circulating cytokines and immune-activation markers and a leader in the quality assessment/control of assays for measurement of circulating cytokines. Insights into the measurement of circulating cytokines, including consideration of multiplex assays, are presented here.