
Tobacco mosaic virus (TMV) is a positive-sense single stranded RNA virus that infects plants, especially tobacco and other members of the family Solanaceae. The infection causes characteristic patterns, such as `mosaic`-like mottling and discoloration on the leaves (hence the name). TMV was the first virus ever to be discovered. Although it was .....
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http://en.wikipedia.org/wiki/Tobacco_mosaic_virus

(from the article `plant virus`) Plant viruses are transmitted in a number of ways, the most important of which is through insect bites, primarily by aphids and plant hoppers. One of ... Russian microbiologist who, from his study of mosaic disease in tobacco, first detailed many of the characteristics of the organisms that came to be .....
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http://www.britannica.com/eb/a-z/t/56

<virology> Plant RNA virus, the first to be isolated. Consists of a single central strand of RNA (a helix of 6500 nucleotides) enclosed within a coat consisting of 2130 identical capsomeres that, in the absence of the RNA, will self assemble into a cylinder similar to the normal virus but of indeterminate length. Causes mottling of the leaves...
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Plant RNA virus, the first to be isolated. Consists of a single central strand of RNA (a helix of 6500 nucleotides) enclosed within a coat consisting of 2130 identical capsomeres that, in the absence of the RNA, will self-assemble into a cylinder similar to the normal virus but of indeterminate length. Causes mottling of the leaves of the tobacco plant.
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[
n] - the widely studied plant virus that causes tobacco mosaic
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http://www.webdictionary.co.uk/definition.php?query=tobacco%20mosaic%20viru
TMV noun the widely studied plant virus that causes tobacco mosaic; it was the first virus discovered (1892)
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https://www.encyclo.co.uk/local/20974
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