A mechanism by which cells shut down large sections of chromosomal DNA. Gene silencing is done by incorporating the DNA to be silenced into a form of DNA called heterochromatin that is already silent.
The process of gene silencing is important for the differentiation of many different types of cells.
- Silent stroke
Small strokes that do not cause any symptoms. Silent strokes still damage brain tissue. The most common symptom of a stroke is weakness or paralysis on one side of the body or the other. There may be a partial or complete loss of voluntary movement and/or sensation in a leg and/or arm. A stroke can […]
The chief component of sand and a substance responsible for lung disease and cancer. Crystalline silica of respirable size is primarily quartz dust occurring in industrial and occupational settings in the form of fine, breathable particles. Respirable crystalline silica results from mining and grinding coal. In the year 2000, crystalline silica of respirable size was […]
A form of lung disease resulting from occupational exposure to silica dust over a period of years. Silicosis causes slowly progressive fibrosis of the lungs, impairment of lung function and a tendency to tuberculosis of the lungs. Crystalline silica of respirable size is primarily quartz dust occurring in industrial and occupational settings in the form […]
- Silk Road disease
Behcet’s disease. Called Silk Road disease because it is most common and more severe in people originating from countries along the Silk Road, the vast network of ancient trade routes connecting China with the Mediterranean Basin.
Is noted in the periodic table as Ag with an atomic number 47. It is a precious metal used in jewelry, dental fillings, silverware and other consumer goods. A metal used in some medications and in many “natural” remedies. Silver has antibiotic properties. However, overuse of silver, or use of products containing silver by people […]