Identify the first and last step of gene therapy for ADA deficiency using lymphocytes. (a) Introduction of functional ADA cDNA into lymphocytes. (b) Culture of lymphocytes in vitro. (c) Isolation of lymphocytes from the patient. (d) Reintroduction of genetically engineered lymphocytes into the patient.
- AFirst: (c), Last: (d)
- BFirst: (c), Last: (a)
- CFirst: (a), Last: (d)
- DFirst: (d), Last: (b)
✓ Correct answer: A
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