More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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The horizontal fraction bar was introduced by the Arabs.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
Apparent and True Orbits of Alpha Centauri.
iron
A typical bank statement.
Hematocrits, left to right: normal, anemia, polycythemia.
Typical clinical manifestation of hereditary angioedema (C1 inhibitor deficiency). You can see a ...