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Chapter 13, Problem 6TMW
Summary Introduction

To tell:

Why viruses seem to alive and yet not alive.

Introduction:

Dmitri Ivanowski, a Russian microbiologist, discovered viruses and called them as non-filterable agents. To prove his experiment he took the plant sap from an infected tobacco plant, filtered it, and passed to a healthy tobacco plant. The infectious plant sap successfully infected the healthy plant. He termed the viruses as non-filterable agents; it is a first discovery of viruses. In 1935, Wendell Stanley successfully isolated the tobacco mosaic virus.

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