What Is An Infectious Virus?
What Is An Infectious Virus?,
By Science Prof Online,

"Viruses are not living cells, but efficient parasites that commandeer living cells and turn them into virus factories. Learn how these nonliving particles act so smart."

Copyright Tami Port.

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Read more: http://www.scienceprofonline.org/microbiology/what-is-a-virus.html
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