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Nine fowl adenoviruses (FAdVs) isolated from chickens with inclusion body hepatitis (IBH) in Japan from 2009 to 2010 were characterized serologically and genetically. These isolates were all neutralized by antisera against the SR-48 strain (FAdV-2). Phylogenetic analysis based on the part of the hexon gene that included the L1 region revealed that all isolates were almost identical except one isolate in 2009. This suggests a common ancestor for the FAdVs obtained from chickens with IBH in Japan in 2010.
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Mase et al. (2012) studied this question.
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