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Author Question: This type of leukocyte constitutes about 70 of the total circulating white blood cells. A. ... (Read 100 times) |
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.