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Did you know?
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.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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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 term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
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The familiar sounds of your heart are made by the heart's valves as they open and close.