There are more nerve cells in one human brain than there are stars in the Milky Way.
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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
Major structures of the human brain.
Life-cycle of the Sun; sizes are not drawn to scale.