Proteomics analyses of E. purpurea phytocompound effects on mouse bone-marrow derived immature dendritic cells (iBMDCs). Effect of Echinacea purpurea extract on differential protein expression in iBMDCs was evaluated by 2D gel electrophoretic analysis. 500 μg of total cell proteins from various treatments of iBMDCs were applied to pH 5-8 IPG strips. After isofocusing and 2D gel separation, SYPRO Ruby was used to stain proteins. Images on gel were analyzed using PD-Quest software. Forty-two differentially-expressed proteins were trypsin-digested in situ, and 23 protein spots were identified by MALDI-TOF MS, with their locations in gel assigned a number. These protein ID numbers are listed in Table 4. A, Up-regulated and B, down-regulated protein spots are reported on a representative two-dimensional gel corresponding to protein expression profile of iBMDCs. The expression ratios are shown in bold print. Gels shown here are representative of thee independent experiments.