17 词条主页 > 词条 > 塞尔维亚克罗地亚语 (SH) > virus
virus
A category of extremely small microscopic parasites of plants, animals, and bacteria. Viruses are not cells but rather RNA or DNA molecules surrounded by a protein coating. Since viruses cannot reproduce without a host cell, they are not strictly speaking living organisms. There are many kinds of viruses.
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- 行业/领域： 人类学
- 类别 体质人类学
- Company: Palomar College
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