Fig. 3From: Clinical characteristics and predictive value of lower CD4+T cell level in patients with moderate and severe COVID-19: a multicenter retrospective studyKaplan-Meier plots shows the survival rate of COVID-19 patients who were stratified into two groups according to CD4+T cell level. (green line, higher CD4+T cell level group; blue line, lower CD4+T cell level group)Back to article page