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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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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

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Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Detritivores are often classified according to their body size as microflora, microfauna, mesofauna, Detritivores are often classified according to their body size as microflora, microfauna, mesofauna,
Using a microscope to study the human body Using a microscope to study the human body
Body cavities. Body cavities.
An example of a urine chemical analyzer. An example of a urine chemical analyzer.
A needle that drops to near zero when the engine is accelerated rapidly and then rises slightly to ... A needle that drops to near zero when the engine is accelerated rapidly and then rises slightly to ...
DNA sequencing reactions DNA sequencing reactions
Video: Osteoporosis

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