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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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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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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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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.