Fig. 2.

Dynamic changes of lymphocyte subsets count between improved and dead group. The severe patients were divided into improved and dead groups according to the outcomes as of February 13. The count of CD3⁺ T cell (A), CD4⁺ T cell (B), CD8⁺ T cell (C), B cell (D) and NK cell (E) were illustrated in chronological order. The solid lines (black) show the lower normal limit of each parameter. The dotted line (red) show the cut-off value calculated by ROC analysis. Scatter plot described the correlation between TNF with CD3⁺ T cell (F), CD4⁺ T cell (G) and CD8⁺ T cell (H), respectively.