Reply To: A Hello to Virology
Centrifugation could be its own specialization, and mastering its techniques could take some time, so I won’t elaborate greatly about what is being done, but centrally, it’s what is known as “density gradient” or “isopycnic” centrifugation, which separates components of a suspension based on the their density.
The above photo is such a technique used on bacteriophages, with the arrow denoting the band containing the virus.
Here is fairy decent summary primer for centrifugal virus purification, in case anyone is interested:
#https://www.beckman.com/resources/reading-material/case-studies/virus-purification-fundamentals