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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?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
Did you know?
Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.