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Did you know?
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Did you know?
Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
Did you know?
Thyroid conditions may make getting pregnant impossible.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
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