Fig. 2
From: Immune response to Propionibacterium acnes in patients with sarcoidosis – in vivo and in vitro
Specific antibody ratio of P. acnes and S. aureus. Boxplots of specific antibody ratios of P. acnes in BAL fluid of healthy volunteers (white bars), Löfgren patients (light grey bars) and non-Löfgren sarcoid patients (dark grey bars). Specific antibody ratios are expressed as ratio between Anti-P. acnes-IgG [arbitrary units] and total IgG [μg/ml] (a) or as ratio between Anti-P. acnes-IgA and total IgA (b) (**p < 0.005)