Figure 4: Effect of Suillus granulatus polysaccharides with or without concanavalin A-induced and lipopolysaccharide-induced on splenocyte proliferation (a) Suillus granulatus polysaccharides, values are mean ± standard deviation, *P < 0.05, **P < 0.01 vs. negative control; (b) Suillus granulatus polysaccharides + concanavalin A, values are mean ± standard deviation, *P < 0.05, **P < 0.01 vs. concanavalin A; (c) Suillus granulatus polysaccharides + lipopolysaccharide, values are mean ± standard deviation, *P < 0.05, **P < 0.01 vs. lipopolysaccharide)