is being used for the treatment of Parkinson disease, the technique being based on the selective destruction of tissue by freezing it with a small cryogenic probe. A similar technique has also been employed to destroy brain tumors and to arrest cervical cancer. This can help a patient to recover quicker from surgery and there is a higher chance of a tumor not returning using this method. In this field of research, donors are key for continuation. With out donors, there would be nothing to work with, no advances would be able to be made, and recipients would lack the heart, tissue, or vein that they need. These, however, arent the only type of donors needed. Sperm and eggs are also needed to aid in pregnancy for couples that cannot reproduce. These are also frozen for later use to be implanted in a woman or used in an unnatural environment (research). This implantation can cost over $600 but is said to be worth it. But there are complications that can go along with this. The donated semen must be screened for infections and diseases. Cytomegalovirus, AIDS, and Cystic fibrosis are among the top transmitted diseases in semen donors. Cystic fibrosis can put almost any couple at risk. The gene for CF can be carried in either the mother or father. Your ethnic background also has a lot to do with the possibility of a newborn to have CF.When materials are frozen, the properties can drastically change. In paradigm, mercury solidifies and rubber becomes brittle. Helium-4 can change from a gas to a liquid to a super fluid, and when put in a container, forms a thin film on the surface. Oxygen can be produced from air that can be used in rocket engines, for cutting and welding torches, for supporting life in space and deep-sea vehicles, and for blast furnace operations. Nitrogen can also be produced from air for the making of ammonia for fertilizers, to prepare frozen foods, and to ship frozen foods. Cryogenics is quickly becoming ...
