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.
1 Green biotechnology is biotechnology applied to agricultural processes. 2  An example would be the selection and domestication of plants via micropropagation. 3  Another example is the designing of transgenic plants to grow under specific environments in the presence (or absence) of chemicals. Some examples are the designing of organisms to produce antibiotics, and the engineering of genetic cures through genetic manipulation. 2  White biotechnology, also known as industrial biotechnology, is biotechnology applied to industrial processes.