MUC5AC and Diarrhea: L. reuteri ZJ617 possessing more surface GAPDH exhibited greater cell membrane permeability and adhesive activity towards mucin; higher adhesion to the jejunum, ileum, and colon of piglets; and a lower incidence rate of diarrhoea in piglets compared with L. reuteri ZJ617 possessing less surface GAPDH [36].