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Table 1 Distribution and severity of histological lesions in heart, liver and lung stained with HE at 24 h post-infection in chickens challenged with wild-type strains and isogenic mutants

From: Roles of iron acquisition systems in virulence of extraintestinal pathogenic Escherichia coli: salmochelin and aerobactin contribute more to virulence than heme in a chicken infection model

Strain Heart Liver Lung
E058 +++ +++ +++
E058Δ chuT +++ ++ +++
E058Δ iroD - - -
E058Δ iucD - + ++
E058Δ chuT Δ iroD Δ iucD - - -
U17 +++ +++ +++
U17Δ chuT +++ +++ +++
U17Δ iroD - - -
U17Δ iucD + + ++
U17Δ chuT Δ iroD Δ iucD - - -
  1. HE, hematoxylin and eosin.
  2. -, no lesions; +, mild lesions; ++, moderate lesions; +++, severe lesions.