Concept
Version 6
Created by Boundless
Colds
Coronaviruses
Coronaviruses are a group of viruses that have a halo, or crown-like (corona) appearance when viewed under an electron microscope. If you have a cold 10-15% of the time it is caused by a virus like this.
Source
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"Coronaviruses 004 lores."
http://commons.wikimedia.org/wiki/File:Coronaviruses_004_lores.jpg
Wikimedia
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