Figure 1From: Cells of the synovium in rheumatoid arthritis. Dendritic cellsDendritic cells are important directors of immune responsiveness. (a) Under steady-state conditions, recruitment of resting dendritic cell (DC) precursors into tissues and migration into secondary lymphoid organs occurs constitutively, and may favour tolerance induction. (b) On the other hand, stimulation of DC maturation and activation may initiate T-cell proinflammatory cytokine production, cytotoxic function, and B-cell antibody production.Back to article page