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Viruses were assumed to exist before they were first seen with an electron microscope in which decade?

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asked Jan 2 in Science by BrendaBurche (450 points)

Viruses were assumed to exist before they were first seen with an electron microscope in which decade?

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answered Jan 2 by JudithWooten (530 points)

1930 ' s

Viruses were assumed to exist before they were first seen with an electron microscope in the 1930s. Multiple hypotheses for viral origins have been proposed.

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