Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Did you know?
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
A Black cat under the snow.
Once you go black, you never go back!
Black Raspberry
ACNE black head.
Supermassive Black Holes as Engines for Galactic Activity
X-ray showing pneumonia. Fluid and blood cells fill the lungs