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The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

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Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Pulse oximetry. The small device provides a digital readout of oxygen levels in the blood. Pulse oximetry. The small device provides a digital readout of oxygen levels in the blood.
Electronic digital thermometers are accurate and easy to read. Electronic digital thermometers are accurate and easy to read.
Wedge-shaped oil film curved around a bearing journal. Wedge-shaped oil film curved around a bearing journal.
A gasoline direct-injection (GDI) fuel rail and pump assembly with the electric pressure control ... A gasoline direct-injection (GDI) fuel rail and pump assembly with the electric pressure control ...
The direct product of phosphate hydrolysis from PEP is the enol form of pyruvate The direct product of phosphate hydrolysis from PEP is the enol form of pyruvate
Carbon-11 is used in medical imaging. The half-life of this radioisotope is 20.4 min. What ... Carbon-11 is used in medical imaging. The half-life of this radioisotope is 20.4 min. What ...
Video: Allergic Rhinitis

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