The horizontal fraction bar was introduced by the Arabs.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
Total hip prosthesis.
A Negative Afterimage
OraQuick. A negative result would show a red line at the "C" mark, whereas a positive ...
The cell wall of a Gram-positive bacterium, S. aureus