The human body produces and destroys 15 million blood cells every second.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
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The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.
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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.
Enhancement of Contrast
Contrast of ventilation and external and internal respiration.
How lateral inhibition produces contrast enhancement. (Based on Ratliff, 1972.)
The responses of an on-center cell to contrast.
Bar-eye phenotypes in contrast to the wild-type eye in Drosophila