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See the main article for this category, Viruses.


A virus is an extremely small infectious agent. A virus consists of a protein coating over a strand of RNA or DNA, which replicates itself by taking over a host cell of another life form, implanting its genetic information into it, and causing the cell to produce more viruses.

Pages in category "Viruses"

The following 17 pages are in this category, out of 17 total.