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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
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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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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Your heart beats over 36 million times a year.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.