They extract a biological component, a protein from the cells, which is then used for the Vaccine. The cells are apparently grown for laboratory use from a specific stock - https://en.wikipedia.org/wiki/MRC-5 So because they aren't putting whole cells in there, it doesn't count, pretty sure they say "filtered" because it sounds cleaner for responding to that worry. Technically, if I extract a component out of something, I am filtering out the rest.
They extract a biological component, a protein from the cells, which is then used for the Vaccine. The cells are apparently grown for laboratory use from a specific stock - https://en.wikipedia.org/wiki/MRC-5
So because they aren't putting whole cells in there, it doesn't count, pretty sure they say "filtered" because it sounds cleaner for responding to that worry. Technically, if I extract a component out of something, I am filtering out the rest.
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