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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.