Fig. 1From: Downregulation of the PD-1/PD-Ls pathway in peripheral cells correlates with asbestosis severityPercentages of CD4+ or CD8+ T cells among lymphocytes in PB. The percentages of CD4+ (a) or CD8+ (b) T cells among lymphocytes in the PB of healthy controls and patients with asbestosis or silicosisBack to article page