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The Furin Cleavage Site in Sarbecoviruses: A Nuanced Analysis of a Defining Viral Feature
https://davidlingenfelter.substack.com/p/the-furin-cleavage-site-in-sarbecoviruses
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SARS-CoV-2 has a unique S1/S2 furin site, but also shares a conserved S2' site with bat and pangolin viruses—key for infectivity and a target for broad-spectrum vaccines.