Figure 2From: Different regulation of cigarette smoke induced inflammation in upper versus lower airwaysCD3+ cells. Lymphoid follicles were demonstrated in lungs after chronic CS exposure, using CD3(brown)/B220(blue) doublestaining (Fig. 2A, × 200). In nose however, no increased number of CD3+ cells in inferior turbinate, or lymphoid follicle neogenesis was found at that time point (Fig. 2B, × 400).Back to article page