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Topic: Furin Cleavage Site

Security personnel stand guard outside the Wuhan Institute of Virology in Wuhan as members of the World Health Organization (WHO) team investigating the origins of the COVID-19 coronavirus make a visit to the institute in Wuhan in China's central Hubei province on February 3, 2021. (HECTOR RETAMAL/AFP via Getty Images)

Scientists debate lab leak

Daniel Karel