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WEB5 days ago · A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. …
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WEBApr 12, 2024 · Learn about the history, classification, and characteristics of viruses, the smallest infectious agents that can replicate only in living cells. Explore how viruses cause diseases, how they are studied, and how they may have ecological significance.
新型コロナウイルス(COVID-19)関連情報ページ - 厚生労働省 ...