Inflammatory characteristics of COVID-19 convalescent plasma. Concentrations of 10 soluble factors in the FFP (n = 166) considered as the gold standard versus the CCP (n = 766)—A) sCD40L (pg/mL), B) IFN-beta (pg/mL), C) IL-1 beta (pg/mL), D) IL-8 (pg/mL), E) IL-18 (pg/mL), F) IFN-alpha (pg/mL), G) IFN-gamma (pg/mL), H) IL-6 (pg/mL), I) TNF-alpha (pg/mL) and J) IL-10 (pg/mL). Scatter dot plots represent data and the red line denotes the median of raw data. Statistical analyses were performed using unpaired t-tests.