People are freaking out about UV lights, but they've been used for more than a decade to examine ballots: https://www.gmanetwork.com/news/news/nation/186940/ultraviolet-lamps-will-be-used-to-check-ballots-authenticity/story/
The CDC says we can:
https://www.cdc.gov/coronavirus/2019-ncov/lab/grows-virus-cell-culture.html
Yup