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Did you know?
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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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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There are approximately 3 million unintended pregnancies in the United States each year.