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Vaccines prevent between 2.5 and 4 million deaths every year.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.
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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.