Table 2—

Absolute and differential cell counts in bronchoalveolar lavage fluid(BALF)

Never-smokersSmokers with normal lung functionCOPD patients
Subjects72923
Total cell count ×103·mL−163.8±15.3283±49*186±28
Macrophages %93±193±286±2
Lymphocytes %6±16±110±2
Neutrophils %1±0.31±0.24±2
BALF recovery mL104±695±3#69±5**
  • Data are presented as n or mean±sem. COPD: chronic obstructive pulmonary disease. *: p<0.05 versus never-smokers; **: p<0.01 versus never-smokers; #: p<0.01 versus COPD patients.