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The Doppler Effect is sensitive only to motion along the line of sight.
Acute Diarrhea
A condition characterized by the sudden onset of frequent, loose, or watery stools, often lasting a few days and usually not longer than two weeks.
Antidiarrheal Drug
Medications designed to slow the movement of the intestinal tract to reduce diarrhea.
Melena
The passage of dark, tarry stools containing digested blood, indicative of upper gastrointestinal bleeding.
Gastrointestinal Tract
The series of organs responsible for digestion, starting from the mouth and extending through to the anus, including the stomach and intestines.
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