CCR7 and sarcoidosis: First we studied the relative gene expression of the typical M1 markers, IL-12p35 (Fig. 1a), IL-23p19 (Fig. 1b), CCR7 (Fig. 1c), and M2 markers, IL-10 (Fig. 1d) and CCR2 (Fig. 1e), in total BAL cells of sarcoidosis patients and healthy subjects after culturing in medium for four or 24 h, or after 24 h of LPS stimulation.