PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 18403237-3 2008 In this study we used the chicken model to study the expression of iutA and ibeA by two ExPEC strains during growth of bacteria in LB medium and during the infection. lb medium 131-140 Aerobactin siderophore ferric receptor protein IutA Escherichia coli 67-71