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Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

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Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

An example of a homeostatically controlled variable: blood levels of glucose in a human. An example of a homeostatically controlled variable: blood levels of glucose in a human.
Electronmicrograph showing a blood clot composed of fibrin, red blood cells, and tissue debris. Electronmicrograph showing a blood clot composed of fibrin, red blood cells, and tissue debris.
Proper Hand Washing Proper Hand Washing
JNC-VII Classification of Blood Pressure for Adults JNC-VII Classification of Blood Pressure for Adults
Heart Valves and Circulation of Blood Heart Valves and Circulation of Blood
The Body's Response to Blood Loss The Body's Response to Blood Loss
Video: Retina

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