"I’m not a biotech," Sam said, letting his annoyance show. "I’m just a researcher. But I’ve got a good memory. I saw an article on Vigid once. Some researcher for the UCAS government had done an experiment. It got contaminated when an assistant spilled some acetone while cleaning glassware. The acetone interacted with the protein shell of the virus, stripping parts of it and causing the core genetic material to mutate in an isomeric form."