Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
There are 60,000 miles of blood vessels in every adult human.
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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
The structure of a DNA strand
Structure of fish gills.
Microtubules: Cilium structure
Structure of a complex of a type II DNA methylase with DNA