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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Did you know?
Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.
Did you know?
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.