Figure 2
From: Increased levels of (class switched) memory B cells in peripheral blood of current smokers
Flow cytometry plots of regulatory T cells in peripheral blood. The CD25 expression (red curve) compared to the isotype (blue curve), and the CD25 total and CD25high gates are depicted in the upper panel. The Foxp3 expression (red curve) compared to the isotype (blue curve), and an example of the difference in Foxp3 expression between COPD (red curve) and healthy (blue curve) are depicted in the lower panel.