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Cytological analysis of the AHV-1 infected DEF by haematoxylin and eosin staining. The microscopic examination demonstrated that AHV-1 can induce chromatin fragmentation (denoted by arrowheads in A, and B, 1000×) in AHV-1 infected DEF, which could serve as indication of apoptosis. No such change was observed in mock-infected cell cultures (C, 1000×).
