The human body produces and destroys 15 million blood cells every second.
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The horizontal fraction bar was introduced by the Arabs.
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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Nuclear division at the DNA level
A second-division segregation pattern in a fungal octad
Four different spindle attachments produce four second-division segregation patterns