Morphology
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Physicochemical and Physical Properties
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Nucleic Acid
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Proteins
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Lipids
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Carbohydrates
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Genome Organization
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Replication
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Virion Assembly and DNA Packaging
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Infection
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Latency
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Host Range
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Transmission in Nature
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Geographic Distribution
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Family Demarcation Criteria
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Genus Demarcation Criteria
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Species Demarcation Criteria
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