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Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

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Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

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Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Primary visual processing areas (blue) in (a) human (lateral and mesial views) and (b) chimpanzee. Primary visual processing areas (blue) in (a) human (lateral and mesial views) and (b) chimpanzee.
The Principal Internal Structures of a Multipolar Neuron The Principal Internal Structures of a Multipolar Neuron
A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ... A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ...
The primary and secondary adaptive responses. The primary and secondary adaptive responses.
A Western blot for confirmatory HIV diagnosis. After an enzyme immunoassay has been performed and ... A Western blot for confirmatory HIV diagnosis. After an enzyme immunoassay has been performed and ...
Primary growth in a shoot Primary growth in a shoot
Video: Introduction to Macular Degeneration

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