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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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Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

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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.

Energy budget for a temperate deciduous forest (data from Gosz et al. 1978). Energy budget for a temperate deciduous forest (data from Gosz et al. 1978).
Extent of agricultural activity across the planet (data from Foley et al. 2005). Extent of agricultural activity across the planet (data from Foley et al. 2005).
Thyroid scan. The right image is the data from a thyroid scan, printed on a superimposed map of the Thyroid scan. The right image is the data from a thyroid scan, printed on a superimposed map of the
Flow cytometry data that shows the differences in CD3+ CD4+ cells that occur with HIV infection. ... Flow cytometry data that shows the differences in CD3+ CD4+ cells that occur with HIV infection. ...
Data management questions Data management questions
Satellite data on primary productivity in the equatorial Pacific Ocean Satellite data on primary productivity in the equatorial Pacific Ocean
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