In addition, the results presented in Figure 4F show that in the absence of PM (at 2% Aq), the gut responds by significantly increasing the expression of mucin-1, mucin-2, mucin-5AC, mucin-5B, and mucin-19 genes, and potentially contributes to lower WSSV infection rates in shrimp (Figure 4F). The gene discussed is MUC5B; the disease is infection.