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Fig. 4 | BMC Pulmonary Medicine

Fig. 4

From: Altered deposition of inhaled nanoparticles in subjects with chronic obstructive pulmonary disease

Fig. 4

(a, b). Correlations for volumetric sample depth and particle size. The relation between lung particle deposition measured at different sample depths and for different particle sizes. In a (left panel), for 50 nm particles at sample depths 1300 ml and 1800 ml, and in b (right panel), for 50 nm and 100 nm particles at sample depth 1800 ml. Pearson’s correlation coefficient and p-values are indicated in the figure. Healthy = green, smokers = blue, COPD = red

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