Question

virus ki khoj kisne ki ​

Answer 1

Answer:

In 1892, Dmitry Ivanovsky used one of these filters to show that sap from a diseased tobacco plant remained infectious to healthy tobacco plants despite having been filtered. Martinus Beijerinck called the filtered, infectious substance a "virus" and this discovery is considered to be the beginning of virology.

Explanation:

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Answer 2

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Dmitry Ivanovsky