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Figure 2 | BMC Pulmonary Medicine

Figure 2

From: Smoking reduces surfactant protein D and phospholipids in patients with and without chronic obstructive pulmonary disease

Figure 2

Bronchoalveolar lavage fluid SP-D levels corrected for dilution in never, former, and current smokers with normal lung function or COPD as defined by spirometry. The dilution factor of the BAL was calculated by the ratio of plasma/BAL urea. The never smokers had significantly higher SP-D levels in their lavage fluid compared to former and current smokers.

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