In the early years of plant genetic engineering, the main concern was to improve plant traits by transferring genes that could resist insect pests or withstand herbicides or gain immunity against disease. Now, improving the ability of plants to produce food and fiber is no longer a modest traditional demand in exchange for broad ambitions that play the heads of scientists from day to day. For example, it was possible to produce special types of lubricants and disinfectants in soybeans. To make plastic in its green plastids. Genetically engineered plants have also become the source of some enzymes of a special nature, which are used in industry. In another development, scientists are seeking to use plants in what is known as phytoremediation. In this area, researchers are genetically engineering plants to acquire the ability to eradicate pollutants from soil or water without affecting its growth. The more recent development is genetically engineered plants to produce materials of medical importance, which may soon replace the traditional fermentation of drugs. The motive for this trend was the desire for people to get protective vaccines with their food.