Salmonella enterica serovar Enteritidis colonization of the chicken caecum requires the HilA regulatory protein36756, Bohez, L., Ducatelle R., Pasmans F., Botteldoorn N, Haesebrouck F., and Van Immerseel F. , Vet.Microbiol., 25/8/2006, Volume 116, Issue 1-3, Number 210, p.202 - 210, (2006)