Category: T
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Transferring enzyme
An enzyme that facilitates the moving of one molecule to another compound.
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Thermoneutral environment
An environment with an ambient temperature that minimizes the risk of heat loss via conduction, convection, radiation, and evaporation; often used to protect newborns.
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Transmissible spongiform encephalopathy
Neurological illnesses marked by rapidly developing dementia, or the sudden onset of psychiatric illnesses, often with myoclonus, ataxia, and aphasia. Death may occur within months of onset. These illnesses are believed to be caused by infectious proteins called prions. Examples include kuru, mad cow disease (bovine spongiform encephalopathy), and Creutzfeldt- Jakob disease.
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Toxic encephalitis
Encephalitis resulting from metal poisonings (e.g., lead poisoning).
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Tick-borne encephalitis
A flaviviral infection of the brain transmitted by Ixodes ticks.
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Thermionic emission
The process by which electrons are released from an x-ray filament after a current has been passed through it. When the filament is heated, it undergoes a process known as electron emission, wherein electrons are expelled from its surface. The quantity of electrons emitted from the filament is contingent upon the chosen milliamperage.
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Tactile elevation
A small raised area of the palm and sole that contains a cluster of nerve endings.
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Therapeutic electrode
An electrode used for introduction of medicines through the skin by ionization.
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Transthoracic echocardiography
Imaging of the heart and great vessels by means of an ultrasonic transducer placed on the chest wall. Sound waves are transmitted to the underlying organs (e.g., the heart or aorta), and an image is constructed from those that rebound toward the transducer.
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Thyroglossal duct
A duct that in the embryo connects the thyroid diverticulum with the tongue. It eventually disappears, its point of origin being indicated as a pit, the foramen cecum. It sometimes persists as an anomaly.