* If a wild strain is too far away from covid, then it would have taken too long to do the passage.
* If a wild strain is almost identical to covid, then obviously covid derived from that without seeing the interior of a lab.
Under what circumstances would you consider that serial passage work done in a lab might have had something to do with covid?
* If a wild strain is too far away from covid, then it would have taken too long to do the passage.
* If a wild strain is almost identical to covid, then obviously covid derived from that without seeing the interior of a lab.
Under what circumstances would you consider that serial passage work done in a lab might have had something to do with covid?