| Healthy controls | COPD | Pneumonia | |
| Age (years) | 43 (31–62) | 50 (44–56) | 53 (18–75) |
| Sex (M/F) | 10/8 | 6/0 | 5/2 |
| BALF recovery (ml) | 56 (35–71) | 53 (35–55) | 24 (14–38) |
| Leucocytes (103/ml) | 58 (24–115) | 188 (71–275) | 244 (33–1583) |
| Macrophages (%) | 90.7 (75.6–96.8) | 91.7 (82.4–98.8) | 48.6 (38.2–77.0) |
| Lymphocytes (%) | 6.6 (2.4–23.8) | 4.4 (0.6–12.0) | 13.7 (4.8–15.8) |
| Neutrophils (%) | 1.0 (0.0–4.8) | 2.3 (0.6–5.2) | 34.8 (3.0–56.8) |
| Eosinophils (%) | 0.0 (0.0–1.2) | 0.2 (0.0–3.2) | 2.4 (0.2–5.2) |
Age and gender of the volunteers, as well as the characteristics of the BALF obtained. Except for the gender distribution, all parameters are shown as median (range).
BALF, bronchoalveolar lavage fluid; COPD, chronic obstructive pulmonary disease.