Figure 1From: Genomics and proteomics of immune modulatory effects of a butanol fraction of echinacea purpurea in human dendritic cellsSpecific bioactivities of three subfractions of stem and leaf (S+L) extracts of E. purpurea in human immature dendritic cells (iDC). iDCs were treated for 24 h with the S+L tissue extracts and the derived ethyl acetate (EA), butanol (BuOH), or water fractions. Test cells were subsequently analyzed for cell-surface marker CD83 expression by flow cytometry.Back to article page