Figure 6From: The effect of O-antigen length determinant wzz on the immunogenicity of Salmonella Typhimurium for Escherichia coli O2 O-polysaccharides deliveryRepresentative images of histopathological changes in birds. Sections were stained with HE for pathological examination. Gross lesions and immune infiltrate were visually assessed. Scales bars = 50 μm.Back to article page