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CUET

Q24. What is the correct sequence of steps involved in treating SCID (ADA deficiency) through Biotechnology. (A) A functional ADA-CDNA introduced in lymphocytes. (B) Lymphocytes returned to the body of the patient. (C) Lymphocytes from the blood of the patient are grown in culture outside the body. (D) Periodic infusion of such genetically engineered lymphocytes required. Choose the correct answer from the options given below: