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viroids

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Non-Cellular Life: The Border Between Chemistry and Biology

Non-Cellular Life: The Border Between Chemistry and Biology For decades, the standard definition of life required an organism to be composed of one or more cells. However, modern science ...

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Virus Classification and the Systems of Viral Taxonomy

Understanding Virus Classification: How Scientists Organize the Viral World Unlike animals or plants, viruses do not fit neatly into the traditional tree of life because they are not cell...

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