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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

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Illicit drug use costs the United States approximately $181 billion every year.

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Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Allen Test: A patent ulnar artery reveals the return of palm perfusion despite radial artery compres Allen Test: A patent ulnar artery reveals the return of palm perfusion despite radial artery compres
Percutaneous ultrasonic lithotripsy. A nephroscope is inserted into the renal pelvis, and ultrasound Percutaneous ultrasonic lithotripsy. A nephroscope is inserted into the renal pelvis, and ultrasound
Renal System Renal System
Substances Filtered, Reabsorbed, and Excreted by the Kidneys Substances Filtered, Reabsorbed, and Excreted by the Kidneys
IgE bound to a mast cell and cross-linked by antigen-causing mast cell degranulation. IgE bound to a mast cell and cross-linked by antigen-causing mast cell degranulation.
Damage and Repair in the CNS Damage and Repair in the CNS
Video: Flexor reflex & Crossed extensor reflex

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