There are more nerve cells in one human brain than there are stars in the Milky Way.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
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Everyone has one nostril that is larger than the other.
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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
Menstrual cycle
Menstrual cycle.
Menstrual Cycle
The menstrual cycle.
Splinter hemorrhage
The Type of Blood Vessel Injury Often Affects the Nature of the Hemorrhage