Immunohistochemical analysis.

<p>(A) Detection of FAdV antigens in liver tissues after infection with FAdV HBQ12 or JSJ13 strain at 6 dpi. Solid arrows indicate positive signals for viral antigen detected extensively in the liver cells. Scale bar = 50μm in left column figures and 150μm in right column ones. (B) A summary of the number of positive cells is shown, asterisks (*) mark significant differences between groups (P <0.05, n = 5). The error bars indicate standard deviation.