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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

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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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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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

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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Rates of water loss by two turtles and a tortoise indicate an inverse relationship between the dryne Rates of water loss by two turtles and a tortoise indicate an inverse relationship between the dryne
Relationship between levels of COHb in blood and concentration of CO in the surrounding air Relationship between levels of COHb in blood and concentration of CO in the surrounding air
Two views of the phylogenetic relationship between Neandertals and modern H. sapiens. Two views of the phylogenetic relationship between Neandertals and modern H. sapiens.
SSRIs block the reuptake of serotonin into nerve terminals, resulting in increased serotonin levels. SSRIs block the reuptake of serotonin into nerve terminals, resulting in increased serotonin levels.
Relationship between Resource Use and Growth Relationship between Resource Use and Growth
The relationship between the number of stem cell divisions in the lifetime of a given tissue and the The relationship between the number of stem cell divisions in the lifetime of a given tissue and the
Video: Bone tissue types - compact and spongy

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