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Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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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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Vaccines prevent between 2.5 and 4 million deaths every year.

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A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Compartments within (a) animal and (b) plant cells Compartments within (a) animal and (b) plant cells
The life history of T cells The life history of T cells
Stem Cells Stem Cells
The metabolic activity of mammalian cells The metabolic activity of mammalian cells
Bt corn has been genetically engineered to produce a protein Bt corn has been genetically engineered to produce a protein
X-ray showing pneumonia. Fluid and blood cells fill the lungs X-ray showing pneumonia. Fluid and blood cells fill the lungs
Video: Introduction to Cystic Fibrosis

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