Figure 1: Adhesion molecule co-expression on NK cell phenotypes in the CFS/ME and control groups. Co-expression of CD2 and CD18 on CD56brightCD16-/dim was significantly reduced when the CFS/ME group was compared to the control group (A). CD56brightCD16-/dim NK cells from the healthy control group expressed significantly increased amounts of CD18 and CD2 in comparison to CD56dimCD16+ NK cells. CD18+CD11a+CD11c+ co-expression on the CD56dimCD16- NK cells was significantly reduced in the CFS/ME cohort in comparison to the controls (B). Data is presented as mean ± standard error of the mean (*P<0.05 and **P<0.01).