TLR7 expression in immature and mature monocyte-derived dendritic cells from primary Sjögren’s syndrome patients and controls. (A) Percentage of monocyte-derived dendritic cells (moDC) positive for toll-like receptor 7 (TLR7) analyzed by flow cytometry. Primary Sjögren’s syndrome (pSS) patients, P immature n = 18 and P mature n = 16; controls, C immature n = 16 and C mature n = 11. (B) Median fluorescence intensity (MFI) of TLR7 in the corresponding moDC samples. (C) TLR7 on transcriptional level analyzed by real-time quantitative polymerase chain reaction (qPCR) in moDC from pSS patients and controls. pSS, P immature n = 9 and P mature n = 6; controls, C immature n = 14 and C mature n = 7. PE, phycoerythrin.