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Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.
Did you know?
In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.