Firstly, you're talking about mammalian viruses; to grow them (which is
a bad idea in any case), you'd need mammalian cells, and mammalian cells
call for more intensive care than bacteria. It's a big investment, and
it requires a lot of time and effort just to keep them going.
And that's ignoring the fact that each virus will call for a different
target cell type, which in turn calls for different care procedures;
kidney cells may need very different medium and care than liver cells,
for example.
Secondly, plaque assays don't really work, AFAIK, for mammalian viruses.
Because they must be grown with a liquid layer on top, and that liquid
layer allows viruses to spread freely, instead of growing outwards like
bacteriophages.
Besides, if dealing with human infections, a good rule #1 is *never
culture*. If you can do your work without culturing the viruses at all,
then you should.
DNA survives boiling and alcohol, but viruses don't. If you want to
study your kids' colds, you could just take a sample of nasal mucous,
boil it in an eppendorf tube for 10 minutes, add 40% EtOH just to be
sure and then use a tiny sample for PCR, using primers that will amplify
your virus of interest. Ideally use primers that are already tested and
shown to work reliably in the available science literature. If you make
your own, aim for 25 nucleotides in length in a non-repetitive area of
the virus genome that's probably well-conserved, such as promoters.
PCR is great for many reasons. One reason is that it allows you to study
something that is impossible or unwise to culture, such as thermophiles,
bizzarre soil symbiotes, or human pathogens. I would strongly suggest
sticking with PCR and taking normal precautions to avoid infecting
yourself while you take samples.
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