Antihistamine drugs fall into two groups-those that block H 1 receptors and act mainly on blood vessels, and those that block H 2 receptors and act mainly on the secretion of acid in the stomach.
Biotechnology. Biotechnology, or genetic engineering, is the process of using living organisms to improve qualities of a plant by such as the plantâs ability to protect itself against damage or improving upon its ability to grow and produce.t allows for the transfer of one, or a few genes that can introduce traits such as better insect and weed control. Biotechnology at Monsanto Biotechnology is just one component of Monsantoâs three-pronged approach to delivering increased yields sustainably.
Every fruit, vegetable, grain and domestic animal we see today is the result of genetic modification. Biotechnology refines and extends methods that produce new plants and animals. Biotechnology has a long history of use in food production and processing. For ten thousand years fermentation, a form of biotechnology, has been used to produce wine, beer and bread. Selective breeding of animals such as horses and dogs has been going on for centuries.