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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

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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.

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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Unique markings identify individual humpback whales. Unique markings identify individual humpback whales.
Endotracheal intubation. First, a lighted scope is used to identify the trachea from the esophagus. Endotracheal intubation. First, a lighted scope is used to identify the trachea from the esophagus.
Identify each stage of the life cycle Identify each stage of the life cycle
An example of a selection list used to identify symptoms. An example of a selection list used to identify symptoms.
How Americans Identify with Religion How Americans Identify with Religion
Testing client’s ability to identify dull sensation Testing client’s ability to identify dull sensation
Video: Stages of Mitosis - Prophase, Prometaphase, Metaphase, Anaphase & Telophase

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