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.
Traditional Biotechnology. Traditional biotechnology refers to a number of ancient ways of using living organisms to make new products or modify existing ones. In its broadest definition, traditional biotechnology can be traced back to human's transition from hunter-gatherer to farmer.dvances in science enabled the transfer of these mostly domestic techniques into industrial applications and the discovery of new techniques. Examples of traditional biotechnology techniques include selective breeding, hybridization and fermentation.