Biotechnology in Medicine - In the field of medicine, insulin and interferon synthesized by bacteria have already been released for sale. A large number of vaccines for immunization against deadly diseases, DNA probes and monoclonal antibodies (including ELISA tests) for diagnosis of various diseases, and human growth hormone and other pharmaceutical drugs for treatment of diseases are being released or are in the process of being released.

In 1988, an experiment to introduce in human body, the lymphocytes containing a bacterial gene has been approved for patients who were in the terminal stages of cancer and had no chance to survive. During 1990-92, patients suffering with some lethal diseases were subjected to gene therapy.