1998 Human gene therapy is a fairly new study in the biology and medical fields. The results from gene therapy seem almost limitless once it becomes common practice, but for right now there are still some technical aspects to overcome.
Gene therapy is also a highly controversial topic in some aspects.
One of the major goals of gene therapy, and could be the most important, is replacing defective or missing genes with healthy ones. The possibility of eradicating genetic disease and giving someone a normal life is inspiring. There are some problems using a virus when it comes to replacing many genes, and one of the recent techniques to overcome this is using a man-made chromosome. The first disease that was approved for gene therapy was ADA deficiency, in which the body lacks production of adenosine deaminase. First the lymphocytes were taken from the patients and encouraged to grow using a disabled mouse retrovirus as a vector.