Figure 2

Serum IL-8 and TNF-α levels in sarcoidosis patients. Serum TNF-αandIL-L8 levels were measured in patients with pulmonary or extra-pulmonary sarcoidosis. Control subjects were age-matched with a negative PPD (purified protein derivative) test and lower angiotensin-converting enzyme (ACE) levels. Data are presented as mean ± SEM (n = 30) in each group except for controls where n = 20). *p ≤ 0.05, **p ≤ 0.01 and ***p ≤ 0.01 compared with control.