Figure 5

Immune-strengthening activities of EPS from Bacillus subtilis xztubd1 on immune organ indices (A,B), phagocytic activity of macrophages (C), lysozyme activity in macrophages (D) and IL-2 content in serum (E). Data are expressed as the mean ± standard error (n = 6). *P < 0.05, **P < 0.01 versus control.