Figure 2.
CCR2 surface protein is expressed at lower levels in alveolar macrophages compared to freshly isolated blood monocytes. (a) Monocytes (5 × 105 per condition) and (b) alveolar macrophages (5 × 105/condition) were isolated from the same donor and subjected to flow cytometric staining for CCR2 (solid line). (c) The average fold increase in CCR2 median fluorescence over isogenic IgG was 2.64 ± 0.48 for monocytes (*p < 0.05) and 1.12 ± 0.10 for alveolar macrophages (p > 0.05) for three independent experiments. IgG isotype controls are represented by dashed lines.