Changes in DC surface antigen expression after stimulation with immune-adjuvants. CD11c+/HLA DRhi tonsil DC (a-d) and blood monocyte-derived DC (e-f) were investigated by flow cytometry before stimulation (a), after overnight culture in medium alone (b) and after culture with anti-CD40, IFNγ and LPS (c & e) or anti-CD40, IFNγ, LPS and Poly I:C (d & f). The isotype control was used to set the marker M1. The MFI of the cells in MI is shown on the left. The data shown comes from one representative experiment of ten performed.