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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

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Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

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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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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Malpresentation of fraternal twins. Malpresentation of fraternal twins.
Hippocampal Volumes of Pairs of Monozygotic Twins Hippocampal Volumes of Pairs of Monozygotic Twins
Monozygotic Twins Monozygotic Twins
Fraternal twins share about 50 percent of their segregating genes. Fraternal twins share about 50 percent of their segregating genes.
Identical Twin Normal Birth Position Identical Twin Normal Birth Position
Concordance in MZ and DZ twins for a variety of behavioral disorders Concordance in MZ and DZ twins for a variety of behavioral disorders
Video: Tuberculosis Testing

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