Human Gene TherapyHuman gene therapy is a method used in the medical field that treats diseases at the molecular level, solving the source of the problem; our genes. Today, diseases and disorders are generally treated by resolving the symptoms, the surface level of the problem. Many disorders and diseases are caused by defective proteins, and within these defective proteins are damaged and defective genes. These defective genes can be treated with gene therapy. Gene therapy is not new and has been developed and improved by researchers over the past two years. As an experimental technique, gene therapy also has its advantages and disadvantages, but so far it shows positive and increasing success rates. Gene therapy works by introducing new, functional genetic material into damaged genes to help it function and produce beneficial proteins. If a gene is inserted directly into a cell, it will generally not work. So, to accomplish this task, a vector, a modified virus, is used to carry and deliver the new gene. There are two different categories of vectors that can be used in this process; recombine...