Biotechnology and its Applications — BIOLOGY STD 12 Science — Question

→There are two main approaches of gene therapy.
(1) Ex vivo means out side of the body in which the cells are removed from the patient's blood and or bone marrow and culture them in the laboratory.
→ In this cells, desirable gene containing virus can be introduced.
→ When viruses enter into the cell, the desired DNA becomes the part of genome.
→These cells are grown in the laboratory and then injected to the veins of patient.
(2) In vivo means inside the body, no cells are removed from the patient's body, but by using vectors desirable gene is introduced into the body of patient.