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Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
Did you know?
Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.