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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.


