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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.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.
On average, the stomach produces 2 L of hydrochloric acid per day.
The average office desk has 400 times more bacteria on it than a toilet.
![Bow shock formed by the magnetosphere of LL Orionis (center) as it collides with the Orion Nebula fl](https://biology-forums.com/gallery/47/medium_12359_17_05_12_12_50_31.jpeg)
![The lymphatic system. Lymphatic vessels, major lymph nodes, and lymphatic organs. The direction of l](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_18_44_100351360.jpeg)