Fig. 5From: Investigating the role of circulating CXCR5-expressing CD8+ T-cells as a biomarker for bacterial infection in subjects with pneumoniaThe phenotype of CXCR5+ and CXCR5-CD8+ T cells. Circulating CXCR5-expressing CD8+ T-cells had a comparable level of PD-1 compared to their CXCR5- counterparts (a), exhibited low or null expression of the CD103 (b). Representative FACS plots are shownBack to article page