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Cytokine differences between NIH clinical severity groups in COVID-19 patients. Cytokines values between RT-PCR negative (uninfected) patients and RT-PCR positive patients grouped as asymptomatic, mild/moderately symptomatic, and severely symptomatic according to NIH Guidelines. Each point represents an average of two technical repeats per patient. All positive cytokine cutoffs were 0 (dashed line). Statistical significance was calculated using Mann-Whitney Wilcox rank sum test.
