Immunological Mechanisms in Sarcoidosis

"1. Repeated peripheral blood sampling at diagnostic and follow-up visits, in total a maximum of 400 ml/year but never more than 100 ml/ month.~2. Upper airway sampling wih swab, aspirate and curettage, maximum 3 times/year.~3. Faeces sampling, the patients do this themselves and leave it to the research unit, maximum 3 times/year.~4. Bronchoscopy with lavage and a maximum of 6 mucosal biopsies before and after 6-12 months treatment."