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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

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The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

A comparison of alloploidy (seen in species hybrids) and new allopolyploid species. A comparison of alloploidy (seen in species hybrids) and new allopolyploid species.
The human eye, a product of 600 million years of evolution (Lamb, Collin, & Pugh, 2007). The human eye, a product of 600 million years of evolution (Lamb, Collin, & Pugh, 2007).
Human Genetic Disorders Human Genetic Disorders
Human urinary system. Human urinary system.
Loci of Some Human Genes Loci of Some Human Genes
Producing human insulin in E. coli Producing human insulin in E. coli
Video: Attention Deficit Disorder (ADD)

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