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Immunofluorescence staining of HEV ORF2 in liver tissues. Positive signals of ORF2 were observed in liver section in successfully infected group B, C and F. No obvious positive signals were observed in group A, D, E and Control group I. Original magnification, ×20; HEV ORF2 antigen was stained with HEV ORF2-specific antibody in green; nuclei were stained with DAPI in blue.
