Submitted by [deleted] t3_zgf4xf in askscience
KnoWanUKnow2 t1_izk4jwb wrote
Reply to comment by MentalUproar in Are there any viruses that humans must have in/on our bodies in order to stay alive? by [deleted]
Humans? No. For ethical reasons there probably never will be.
But they have done it with other things such as bacteria. They've even created an entirely new organism by creating DNA from scratch with just a few genes and inserting it into a bacterial cell that had it's DNA removed.
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