There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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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.
