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Chapter 18

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Virion Release<br />

• naked viruses<br />

• usually by lysis of host cell<br />

• envelope viruses<br />

• formation of envelope and release usually<br />

occur concurrently (budding)<br />

• virus-encoded proteins incorporated into host<br />

membrane<br />

• nucleocapsid buds outward and is surrounded<br />

by modified host membrane<br />

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