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Levels of cytokines, immunoglobulins and complement in children with COVID-19 patients. A. Cytokines (IL-2, IL-4, IL-6, IL-10, TNF-, and IFN-) in patients in different groups; B. Immunoglobulins (IgG, IgA, IgM, and IgE) and complement (C3 and C4) in different groups.
