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Answer:

Stem cell therapy made her better by changing  into white blood cells that have working ADA enzymes. These white blood cells will be able to break down the toxin and survive. This will strengthen Lucy’s immune system.

Explanation:

Stem cell therapy can help to produce a defective protein and thereby it may help Lucy to metabolize deoxyadenosine normally.

  • Stem cell therapy is a type of regenerative therapy by which stem cells are used to repair dysfunctional or injured tissues/cells.

  • This type of therapy can be used to produce a defective protein (e.g. an enzyme or a structural protein) and thus restore a normal phenotype.

  • For example, stem cell therapy can be used to fight off an extra stop enzyme in order to produce more proteins and thus break down normally a specific substrate (in this case, deoxyadenosine).

In conclusion, stem cell therapy can help to produce a defective protein and thereby it may help Lucy to metabolize deoxyadenosine normally.

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