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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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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

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Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Large size can provide a refuge from predators. While young African elephants may be vulnerable to p Large size can provide a refuge from predators. While young African elephants may be vulnerable to p
Which aspect of executive functioning is required to play the game of “Simon Says,” in which ... Which aspect of executive functioning is required to play the game of “Simon Says,” in which ...
Action of type I and type II topoisomerases, as shown by gel electrophoresis Action of type I and type II topoisomerases, as shown by gel electrophoresis
Food Labels Provide Nutrient Content Information Food Labels Provide Nutrient Content Information
Programs such as Meals on Wheels provide hot meals to elderly adults who cannot leave their homes Programs such as Meals on Wheels provide hot meals to elderly adults who cannot leave their homes
TYPE I and TYPE II CUTANEOUS MECHANORECEPTORS TYPE I and TYPE II CUTANEOUS MECHANORECEPTORS
Video: Five phases of cardiac cycle & Atrial contraction

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