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Prosthodontics
The clinical picture of hairs in black hairy tongue is caused by hyperkeratinized hyperplastic filiform papillae.
Radiology
In an X-ray tube, the filament (cathode) is heated to produce electrons through a process called thermionic emission. This heating is accomplished by a step-down low voltage transformer, which reduces the high voltage from the power supply to a lower
Physiology
Sclera icterus occurs when serum bilirubin levels are at least 51 ?mol/L (3.0 mg/dL), indicating jaundice.