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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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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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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 National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Hydrocephalus. The figure on the left is a child with the enlarged ventricles of hydrocephalus. The Hydrocephalus. The figure on the left is a child with the enlarged ventricles of hydrocephalus. The
Volvulus. A volvulus results when the small intestine twists, causing an obstruction that can lead t Volvulus. A volvulus results when the small intestine twists, causing an obstruction that can lead t
Results are shown for proteins denatured by two different environmental changes Results are shown for proteins denatured by two different environmental changes
Annual Federal Deficit (or Surplus), 1992–2016 Annual Federal Deficit (or Surplus), 1992–2016
The expected results of two generations of semiconservative replication The expected results of two generations of semiconservative replication
Predictions for the results of mutation of an overlapping and a nonoverlapping genetic code Predictions for the results of mutation of an overlapping and a nonoverlapping genetic code
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