Demographic, clinical and biological characteristics of 18 healthy donors and 18 active and 15 inactive chronic sarcoidosis patients.

M = male, F = female, values are given as mean ± SEM,**p†Visceral sarcoidosis lesions that occurred at any time of the patient’s history. Each organ defined was either clinically active at the time of inclusion in the active group or previously involved but not actively involved at the time of inclusion in the inactive group,$Upper respiratory tract sarcoidosis involvement was biopsy proved in 2/9 patients.