Genetic therapy involves transferring exogenous genetic material to correct deficiencies in faulty, disease-causing genes and to modify cells in the affected organ. Some of the diseases that can be treated by these therapies are cystic fibrosis and Duchenne muscular dystrophy. The most common technique begins by isolating the DNA sequences of the defective and of the correct gene. When the latter is multiplied, it is transfected by a modified adenovirus, capable of transporting the modified DNA sequence inside it, replacing and repairing the defective gene. There are also other non-viral gene therapies, but they are not as effective. This infographic is part, along with those of Genetic Solutions, Bovine Cloning, Biochip Applications and Stem Cells, of the series The Age of Genetics.