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Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

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The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

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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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There are 60,000 miles of blood vessels in every adult human.

The Lion Gate of Mycenae (detail)—two lionesses flank the central column, c. 1300 B The Lion Gate of Mycenae (detail)—two lionesses flank the central column, c. 1300 B
Osteoporosis. (a) A section through normal spongy bone. (b) A section through a bone with osteoporos Osteoporosis. (a) A section through normal spongy bone. (b) A section through a bone with osteoporos
The spinal column. The spinal column.
Absorption column with all inlet and outlet feeds Absorption column with all inlet and outlet feeds
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