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Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

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People about to have surgery must tell their health care providers about all supplements they take.

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Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

The blood–brain barrier. The blood–brain barrier.
Energy profile of anaerobic glycolysis Energy profile of anaerobic glycolysis
La Niña events store energy La Niña events store energy
Differences in brain metabolism in the brain of an unaffected individual (upper) and a schizophrenic Differences in brain metabolism in the brain of an unaffected individual (upper) and a schizophrenic
Energy flows from the environment into living organisms, then back to the environment Energy flows from the environment into living organisms, then back to the environment
Energy In, Energy Out Energy In, Energy Out
Video: Mitosis step-by-step

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