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The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.
Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
The familiar sounds of your heart are made by the heart's valves as they open and close.