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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?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.