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Chapter 19 (What is a Virus? (Viruses usually identify host cells by a…
Chapter 19
What is a Virus?
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Discovery of Viruses
Tobacco mosaic disease, could not be cure by a bacteria filter.
Tested by Adolf Mayer, Dmitri Ivanowsky, and Martinus Beijerinck
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Viruses usually identify host cells by a lock-and-key fit between viral surface proteins and specific receptor molecules on the outside of cells.
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Viral envelopes contains host cell phospholipids and membrane proteins, proteins and glycoproteins of viral origin.
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