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Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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

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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.

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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Plant apical meristems and the primary tissues they produce. Plant apical meristems and the primary tissues they produce.
A guanacaste tree, Enterolobium cyclocarpum, growing in Costa Rica. Guanacaste trees, which produce A guanacaste tree, Enterolobium cyclocarpum, growing in Costa Rica. Guanacaste trees, which produce
Orangutan males are twice the size and weight of females. Orangutan males are twice the size and weight of females.
Examples of the most common X-ray positions and the images they produce. Examples of the most common X-ray positions and the images they produce.
Breakfast eggs and bacon Breakfast eggs and bacon
Mosaic X Chromosome Expression in Human Females Mosaic X Chromosome Expression in Human Females
Video: Dorsal Recumbent Position

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