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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.
Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.
![The female reproductive system. (a) Sagittal section through the pelvis. (b) Top view of pelvic orga](https://biology-forums.com/gallery/47/medium_14755_16_10_12_12_26_15_9423844.jpeg)
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