CD79A and sarcoidosis: The BALF of patients with sarcoidosis is characterized by a significant increased amount of immunoglobulins (84.3 μg/ml IgG and 84.9 μg/ml IgA on average) compared to healthy volunteers (12.4 μg/ml IgG and 8.7 μg/ml IgA, p < 0.0001, Fig. 1).