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Would a couple of passes through a lyophilizer like that in Ivins Ft. Detrick lab be all that would be needed to do this, given sufficiently high-quality starting material?
In my view, this is a key question. I've asked this of several people who are experts in these things and they all highly doubt it could be prepared with just that -- that it would take much more than just lyophilizing -- though they all say that without knowing exactly what the beginning and end product, one can't absolutely rule it out.