Also they do not look at truly isolated samples of viruses: they look at concoctions of monkey kidney cells, bovine fetal serum and more with the supposed virus in there. When looking at a concoction like that, what certainty you have you see the virus and not another small biological particle (like exosomes, or dead cell debris)?

Last thing, it seems that with many of these EM photos of viruses, is that the control group was omitted. You also need to bring a concoction that does not have supposed virus in there and somehow show that does not contain the visual element that ARE seen in the sample with supposed virus. Virologists disagree and are okay with going ahead without control groups in these cases.

Because a virus looks nothing like cells that would make up any of those organs. When you examine enough samples and suddenly see some cells that don’t look like they belong that’s a pretty good indicator of a foreign body.