Fig. 2
From: Potential predictors of COVID-19 disease infection and severity in Egypt
Flow cytometric analysis of expression of PD-1 on CD3 + CD4 + T cells and CD3 + CD8 + T cells. (a): Dots-plots of CD3 + cells %, (b): Dots-plots of CD4 + PD-1 + cells % and CD8 + PD-1 + cells %.
