| mechanical transmission |
The passive transfer of causative agents of disease, esp. by arthropods. This may be indirect, as when flies pick up organisms from excreta of humans or animals and deposit them on food, or direct, as when they pick up or
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| mechanism accommodation |
Method by which curvature of the eye lens is changed in order to focus close objects on the retina.
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| mechanism of injury |
ABBR: MOI. The manner in which a traumatic event occurred (e.g., fall from a height, ground-level fall, high- or low-speed motor vehicle accident, ejection from a vehicle, vehicle rollover). The MOI is used to estimate the f
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| Mecholyl test |
A test of parasympathetic nervous system function. A 2% solution of methacholine (Mecholyl) is instilled in the conjunctival sac. The pupil constricts if the patient has a parasympathetic disorder, such as familial dysautonomia.
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| Meckel's scan |
A radionuclide scan to demonstrate the presence of a Meckel's diverticulum. The diverticulum may be difficult to visualize with plain films, barium studies, colonoscopy, or CT imaging.
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