Before addressing Porssimies' post specifically, I think an important point needs to be made about the difference between what mainstream science declares as "isolation" of a virus and purification. I am no scientist but this point is addressed by the authors of the latest edition of 'Virus Mania' (page 388).     Therefore, when reviewing the evidence presented of claims that SARS-CoV-2 has been isolated, we need to be mindful of the above and understand the "isolation" process