MUC2 and Diarrhea: MUC2 mRNA expression in the ilea and colons of both the Landrace and Min pigs in the postweaning healthy and diarrhoea groups decreased compared with that in the unweaned group, and MUC2 mRNA expression in the colons of the postweaning diarrhoea groups was significantly lower than that in the unweaned group (p < 0.05).