the furin cleavage site (the rough ridge that acts like a hook or “key” found in the spikes), which opens and reveals the polybasic insert #Covid19 virus #pandemic

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to see the unique parts of the SARS-CoV-2 virus

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The video below shows: The rough ridge called the furin cleavage site of the virus SARS-CoV-2 which acts like a hook, it is located in the spikes of the virus. It opens up, then reveals the polybasic insert.

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