They've been making vaccines for over a hundred years. That means infecting animals with these viruses and incubating them. It's possible to breed and evolve viruses without directly manipulating DNA, just like it's possible to with plants and animals.
They've been making vaccines for over a hundred years. That means infecting animals with these viruses and incubating them. It's possible to breed and evolve viruses without directly manipulating DNA, just like it's possible to with plants and animals.
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