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The smallest form of microorganisms capable of causing disease. Especially, a virus of fecal origin that is infectious to humans by waterborne transmission.
Ãâó: www.nsc.org/ehc/glossar2.htm
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| -virus |
Description: Microorganism without a cell wall, able to reproduce only by inserting itself into a host cell and hijacking the reproduction mechanism for its own ends. (The virus is then said to infest the cell.). Source: Specialized encyclopedia and dictionaries Description: An infectious agent composed of a single type of nucleic acid, DNA or RNA, enclosed in a coat of protein. Viruses can multiply only within living cells. Source: Specialized encyclopedia and dictionaries
Ãâó: europa.eu.int/comm/research/biosociety/library/glo...
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| -virus |
any of a large group of very tiny infectious agents that are too small to be seen with the ordinary light microscope but can often be seen with the electron microscope, that are considered either very simple microorganisms or very complicated molecules, that have an outside coat of protein around a core of RNA or DNA, that can grow and multiply only in living cells, and that cause important diseases in human beings, lower animals, and plants.
Ãâó: whyfiles.larc.nasa.gov/text/kids/Problem_Board/pro...
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| -virus |
A submicroscopic pathogen composed essentially of a core of DNA or RNA enclosed by a protein coat, able to replicate only within a living cell.
Ãâó: www.bioethics.gov/reports/stemcell/glossary.html
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| -virus |
an infectious agent of small size and simple composition that can multiply only in the living cells of animals, plants or bacteria. In the strictest sense, viruses should not be considered organisms, because they are not free-living: they cannot reproduce and carry on metabolic processes without a host cell.
Ãâó: www.channel4.com/science/microsites/B/bodystory/gl...
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