In the form of gene therapy used successfully for severe combined immunodeficiency syndrome, SCID-X1, how is the genetic engineering of human cells achieved?
A) by injecting engineered viruses into the patient's bloodstream
B) by injecting engineered viruses into the patient's bone marrow
C) by treating a relative's cultured bone marrow cells with genetically engineered viruses and then injecting these cells into the patient's bone marrow
D) by isolating the patient's bone marrow cells, infecting them with genetically engineered viruses, and injecting them back into the patient's bone marrow

Question

Quizplus · Accepted Answer

The correct approach for gene therapy in SCID-X1 involves isolating the patient's own bone marrow cells, then using genetically engineered viruses to introduce the correct gene into these cells, and finally re-injecting these modified cells back into the patient's bone marrow. This method allows the corrected cells to produce the necessary proteins for a functional immune system.

In the Form of Gene Therapy Used Successfully for Severe