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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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People about to have surgery must tell their health care providers about all supplements they take.
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Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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Cyanide works by making the human body unable to use oxygen.