Fig. 2

Dynamic changes of inflammatory cytokines in severe and critical COVID-19. Serum levels of IL-2 (a), IL-4 (b), Ln(IL-6) (c), IL-10 (d), TNF-α(e) and IFN-γ (f) were analyzed at different time points after hospital admission. Data were reported as median and interquartile range (IQR). The dotted line shows the upper limit of normal value of each parameter. *:p < 0.05