PINK1 appears to be a rare cause of inherited Parkinson's disease. A small percentage (~2 percent) of those developing the condition at an early age appear to carry mutations in the PINK1 gene. Genetic testing for the PARK7, SNCA and LRRK2 genes is also available. Individuals and families who are interested in having genetic testing can learn more about their risk for Parkinson's disease and the availability and accuracy of genetic testing for this disease by setting up an appointment with a genetics health professional.
Ivory is an off-white color that resembles ivory, the material out of which the teeth and tusks of animals (such as the elephant and the walrus) are made. It has a very slight tint of yellow. The first recorded use of ivory as a color name in English was in 1385.
Ivory is the teeth of animals. True ivory comes from elephants and mammoth; however, the term is generally applied to the tusks of other mammals, and some synthetics. Chemically, ivory is similar to bone and antler, and comprises a collagen matrix with a mineral component.Unlike bone, ivory has no blood vessel system, and is therefore more dense.hirty teeth of the sperm whale can be used for ivory. Each of these teeth, up to 8 long and 3 across, are hollow for the first half of their length. Sperm whale ivory is easily confused with walrus ivory, as both have two distinct layers. The inner layer of sperm whale ivory, however, is much larger.