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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
Did you know?
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.