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Comment by ximeng

https://www.sciencedirect.com/science/article/pii/S187350612... Here is a paper that states that the furin cleavage site appears naturally in a number of viruses.

I looked into these lab origin theories for the furin cleavage site last year. The problem with it being a laboratory insertion was that although performing an insertion is relatively easy once you know what to insert, generally it’s beyond current science to independently create mutations for a specific purpose.

It’s a bit beyond me as a non-biologist but my feeling based on the literature was that the lab origin was unlikely. However it is pushed in certain circles partly for ideological reasons, based on evidence that is plausible at first glance but with a lot more digging not entirely convincing evidence.

However, there didn’t really seem to be much neutral expert analysis of the evidence.

parent ximeng 5 years ago

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