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The horizontal fraction bar was introduced by the Arabs.

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The familiar sounds of your heart are made by the heart's valves as they open and close.

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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

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The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

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Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ... A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ...
A typical electric cooling fan assembly after being removed from the vehicle. A typical electric cooling fan assembly after being removed from the vehicle.
A typical ECT sensor temperature versus voltage curve. A typical ECT sensor temperature versus voltage curve.
Flowchart of typical compatibility testing for donors and recipients. Both donor and recipient are ... Flowchart of typical compatibility testing for donors and recipients. Both donor and recipient are ...
Life cycle of a typical flowering plant. Life cycle of a typical flowering plant.
Early growth of corn (Zea mays), a typical monocot. Early growth of corn (Zea mays), a typical monocot.
Video: Major Elements in Biological Molecules: Nucleic acids

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