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Table 2 Total measured deposited fraction (mean ± SD)

From: Experimental determination of the respiratory tract deposition of diesel combustion particles in patients with chronic obstructive pulmonary disease

   Total deposition fraction
   Number Surface area Mass
Idle Healthy 0.64 ± 0.06 0.30 ± 0.06 0.27 ± 0.06
  COPD 0.57 ± 0.05* 0.28 ± 0.04 0.29 ± 0.04
Transient Healthy 0.47 ± 0.08 0.27 ± 0.07 0.27 ± 0.07
  COPD 0.40 ± 0.05* 0.26 ± 0.04 0.26 ± 0.04
  1. *p < 0.05 for COPD compared to healthy group.