Figure 2

Reduction of TNFα release from LPS (1 μg/ml-stimulated alveolar macrophages from COPD patients at 1+20 h incubation time (see text for details). TNFα - tumor necrosis factor alpha, NAC - N-acetylcysteine (1 mmol/l), orange - orange oil, eucalyptus - eucalyptus oil. *P < 0.01 compared with cell medium/LPS alone.