An Introduction to Viruses (580 words, 1 pages)
Viruses are infectious agents found in almost all life forms. The viruses are made up either of DNA or RNA, surrounded by a capsid, a protein coat. Viruses are between 20 and 100 times smaller than bacteria, or about 450 nanometers(.000014), being the largest, to 30 nanometers(0.000001 in.) being the ...
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