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

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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Each New DNA Strand Grows from Its 5' End to Its 3' End p1 Each New DNA Strand Grows from Its 5' End to Its 3' End p1
Placenta previa, longitudinal section showing the placenta growing over the opening into the cervix. Placenta previa, longitudinal section showing the placenta growing over the opening into the cervix.
Nephrolithiasis. Stones, or calculi, may form in several areas within the urinary tract. When they f Nephrolithiasis. Stones, or calculi, may form in several areas within the urinary tract. When they f
Cholelithiasis. Common sites of gallstones in the generalized condition. (a) Stones in the hepatic d Cholelithiasis. Common sites of gallstones in the generalized condition. (a) Stones in the hepatic d
Dermatitis herpetiformis is a blistering skin condition associated with celiac disease. Dermatitis herpetiformis is a blistering skin condition associated with celiac disease.
Video: ACTH/Cortisol (glycogenolysis, protein catabolism, lipolysis and gluconeogenesis)

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