Purification, Preliminary Characterization, and Immunological Activity of Polysaccharides from Crude Drugs of Sijunzi Formula

Figure 6

Effects of RS-3-1, BZ-3-1, FL-3-1, and GC-3-1 on NO production of RAW264.7 cells. (Measurement of NO release from macrophages after 24 h stimulation with various concentrations of polysaccharides (1, 10, 50, 100, and 500 μg/mL) for 24 h. The DMEM medium and LPS (5 μg/mL) were used as blank and positive controls, resp. , compared with blank control).