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There are 20 feet of blood vessels in each square inch of human skin.

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A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

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For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

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Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

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Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Proper placement and monitoring of an automatic blood pressure cuff will reduce the risk of injury o Proper placement and monitoring of an automatic blood pressure cuff will reduce the risk of injury o
Location of lymph vessels, lymphatic ducts, and areas of lymph node concentrations. Location of lymph vessels, lymphatic ducts, and areas of lymph node concentrations.
Blood-brain barrier Blood-brain barrier
Insulin, glucagon, and blood glucose. Insulin, glucagon, and blood glucose.
Formation of a blood clot Formation of a blood clot
Blood tissue Blood tissue
Video: Predator- prey competition and symbiosis

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