Silicone rubber is a silicon polymer with rubberized qualities. It was first produced under the chemical name of polydimethlysiloxane. Silicone rubber is heat resistant so can be used to make cookware including oven mitts, tongs, pot holders and pan handles.ilicone, the product, may be a liquid lubricant, a semi-solid adhesive or a rubber-like plastic polymer. Liquid silicone is often used as a lubricant.
Gray matter heterotopia is a neurological disorder that is characterized by the gray matter in the brain being located in the wrong part of the brain. It is associated with epilepsy and can affect higher brain functions and motor skills. Seizures are generally resistant to medication.
Mitochondrial brain disease often affects both gray and white matter. Patterns of brain involvement are helpful in defining phenotype, but heterogeneity even with the same molecular defect is common. In Leigh disease, basal ganglia, brainstem nuclei, and white matter damage was first described by Dennis Leigh in 1951.