Figure 3From: Cigarette smoke increases TLR4 and TLR9 expression and induces cytokine production from CD8+T cells in chronic obstructive pulmonary diseaseLung CD8+ T cells express TLR4 and TLR9 in COPD patients. Representative immmunofluorescent images from frozen endobronchial biopsies of COPD patients demonstrate the co-localization of CD8 (red fluorescence, panels A and D) and TL4 (green fluorescence, panel B) or TLR9 (green fluorescence, panel E). The merged images show CD8+ T cells expressing TLR4 or TLR9 (arrows, panels C and F, respectively). All magnifications are 400×.Back to article page