FIGURE 2.

Influences of the linked Fc or Taishan Pinus massoniana pollen polysaccharide (TPPPS) on macrophage activity. Peritoneal macrophages were cultured with the various concentrations of ompA–Fc (2.5, 5, and 10 μg/mL), ompA (2.5, 5, and 10 μg/mL), TPPPS (12.5, 25, 50, and 100 μg/mL), and PBS for 24 h. The activity of peritoneal macrophages was determined by MTT assay (A,B). The neutral red uptake (C), NO (D), and TNF-α (E) production of peritoneal macrophages were detected as previously described. All values represent the means ± SD of triplicate experiments. Different lowercase letters above the columns indicate significant differences between the different groups (P < 0.05).