Intestinal DiseasesDysentery, AmebicIntestinal Diseases, ParasiticIntestinesEntamoebiasisEntamoeba histolyticaLiver Abscess, AmebicFecesCryptosporidiosisEnteritisGiardiasisIntestinal MucosaDiarrheaYersinia InfectionsTrichinellosisYersinia enterocoliticaGiardia lambliaGastroenteritisIntestine, SmallSalmonella InfectionsEscherichia coli InfectionsImmunity, InnateBacterial AdhesionVirulenceDisease Models, AnimalMice, Inbred C57BLMice, Inbred BALB C