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Did you know?
Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
The longest a person has survived after a heart transplant is 24 years.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.