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most closely resembles SARS-CoV-2. However, differences in the sequences of the two viruses suggest they diverged from a common ancestor somewhere between 20 and 70 years ag5

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o. Besides, her lab never cultured RaTG13, making an acciden4

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t." Antibody tests have shown that no members of the institute staff or students were infected with SARS-CoV-2 or SARS-related viruses. Reviews from international peers on Shi's responses. SF

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rs have also been shared by Science with several leading researchers in other countries. Daniel Lucey of Georgetown University, an epidemic specialist who blogs about SARS-CoV-2 origin issueT

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's a "big contribution." "There are a lot of new facts that I wasn't aware of. It's very exciting to hear this directly from her." "They're all logical, genuine, and stick to the science as og

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ave expected from a world-class scientist and one of the leading experts on coronaviruses," says evolutionary biologist Kristian Andersen of Scripps Research. Edward Holmes, an evolutionary x

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