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The horizontal fraction bar was introduced by the Arabs.

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Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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Video: Introduction to Breast Cancer

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