How do I use my regeneration serum to speed up my virus facility upgrade?
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How do I use my regeneration serum to speed up my virus facility upgrade?
Regeneration serum is used to speed up healing of troops infected while occupying plots.
To upgrade the virus research buildings you need to use Virus Samples, that you get from processing food, water and lumber from occupied plots. Harvest the tainted rss and process them in the processing Plant building(s) until you have enough.
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