Figure 1

Number and volume size distribution of the particle suspensions used for instillation determined by DLS analysis. A) Unfiltered instillation media consisting of 0.9% NaCl added 10% BAL fluid (n = 4). B) Unfiltered stock solution of suspended CB (n = 5). C) Unfiltered stock solution of 2 nm Au particles (n = 4). D) 0.8 μm-filtered stock solution of 2 nm Au-particles (n = 4). The filtered sample show smaller particle size than the unfiltered sample and bimodal distribution by volume. E) Unfiltered stock solution of C₆₀ (n = 4). F) 0.22 μm filtered C₆₀ stock solution (n = 5). The filtered sample reveals the presence of 70–600 nm-size C₆₀ particles not detectable in the bulk stock solution.