How many viruses have you seen under a microscope ?

Question: How many viruses have you seen under a microscope ?
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Asked by to Ian on 17 Mar 2014. This question was also asked by .
- Ian Hands-Portman answered on 17 Mar 2014:
  
  If you mean raw numbers I don’t know – hundreds of thousands. Different types is hard to work out but after a quick scribble on the back of an envelope probably around 300 – a lot of them look the same.

Question: How many viruses have you seen under a microscope ?