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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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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

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There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Assessing Tracheal Position Assessing Tracheal Position
Child with bacterial meningitis in an opisthotonic position. Child with bacterial meningitis in an opisthotonic position.
Measuring the resistance of a spark plug wire with a multimeter set to the ohms position. The ... Measuring the resistance of a spark plug wire with a multimeter set to the ohms position. The ...
After checking for stored diagnostic trouble codes (DTCs), the wise technician checks service ... After checking for stored diagnostic trouble codes (DTCs), the wise technician checks service ...
Traction the neck by placing the head, in neutral position facing upward, in one hand. Place the ... Traction the neck by placing the head, in neutral position facing upward, in one hand. Place the ...
economic question (having trouble) economic question (having trouble)
Video: Structures that affect circulation - venous return

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