| 11. | Released virions can be passed from host to host . . ."
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| 12. | During their normal life cycles, virions produce extracellular and intracellular proteins.
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| 13. | Tetherin aggregates virions and downmodulates the infectivity of the virions.
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| 14. | Tetherin aggregates virions and downmodulates the infectivity of the virions.
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| 15. | Dichorhaviruses have segmented genomes and their short bacilliform virions are not enveloped.
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| 16. | The cleavage occurs during the late stages of virion assembly.
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| 17. | VP4 is on the surface of the virion that protrudes as a spike.
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| 18. | Virions are ~ 300 nm in length and ~ 18 nm in diameter.
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| 19. | The virion is spherical in shape with a diameter of about 100 nm.
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| 20. | The density of the virions is 1.18 gram per cubic centimeter.
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