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Did you know?
There are 60,000 miles of blood vessels in every adult human.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.