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Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

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In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

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In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

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Everyone has one nostril that is larger than the other.

Acromegaly in one individual from a pair of identical twins. Acromegaly in one individual from a pair of identical twins.
A sod house in North Dakota, 1896. Individual “bricks” of sod were hewn from the ground and stacked A sod house in North Dakota, 1896. Individual “bricks” of sod were hewn from the ground and stacked
Streptococci: Individual bacteria that have a rounded shape and have clumped together to form a ... Streptococci: Individual bacteria that have a rounded shape and have clumped together to form a ...
Chewy: Finding Added Sugars on the Label A food Chewy: Finding Added Sugars on the Label A food
Growth of World Trade, 1870–2010 Growth of World Trade, 1870–2010
Prices in Japan before and after Opening to Trade Prices in Japan before and after Opening to Trade
Video: Nucleic acid digestion - brush border enzymes, end products & transport mechanism

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