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in order to make more structural proteins
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that are needed for assembly of the virus.
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The virus then can self-assemble,
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that is, you've made a lot of genetic material,
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you've made a lot of the structural pieces,
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there has to be some way that the virus can reassemble,
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repackage itself into active forms.
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Then that--those active forms are released from the cell.
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Now, sometimes those--that
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release occurs without the cell itself dying.
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In other cases, the virus propagates in such high numbers
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that release is literally an explosion of the cell.