AGAIN: please send me an EM of a virus or a bacteriophage. I asked for a photo that is NOT a computer generated image and you are avoiding the point and trying to make my point something other than what I asked for. My claim is not one virus has ever been isolated and shown to exist. Koch's postulates are the gold standard for establishing the causal relationships between pathogens and disease. If you can't satisfy the first postulate you have nothing. A small genetic snippet that has been grown in a cell culture does not satisfy the first postulate and is not a virus.