How is the first step towards gene therapy performed?

How is the first step towards gene therapy performed?
  1. By introducing drugs in a person's body
  2. By increasing the immunity of a person
  3. By growing lymphocytes from the blood of the patient in a culture outside the body
  4. By introducing a functional ADA cDNA into embryonic cells

Solution

As a first step towards gene therapy, lymphocytes from the blood of the patient

Asked in: NCERT

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