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The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

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Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

The chemistry of polypeptide formation The chemistry of polypeptide formation
Formation and structure of a thymine dimer Formation and structure of a thymine dimer
A subdural hematoma. A meningeal vein is ruptured and blood has accumulated in the subdural space, p A subdural hematoma. A meningeal vein is ruptured and blood has accumulated in the subdural space, p
Instilling Nasal Medications Instilling Nasal Medications
Bone Formation Bone Formation
Blood vessels associated with the nephron. The glomerulusis a ball of capillaries that have unusuall Blood vessels associated with the nephron. The glomerulusis a ball of capillaries that have unusuall
Video: The Pressure Flow Model in a Plant

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