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Did you know?

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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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

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Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Gunnar Kaasen and Balto, the lead dog on the last relay team of the 1925 serum run to Nome. Gunnar Kaasen and Balto, the lead dog on the last relay team of the 1925 serum run to Nome.
(a) Uranium series dating uses the decay chain of radioactive uranium to stable lead. (a) Uranium series dating uses the decay chain of radioactive uranium to stable lead.
Recording a 12-Lead Electrocardiograph Recording a 12-Lead Electrocardiograph
Anxiety model. Stressful events lead to symptoms of anxiety, which can be resolved by coping ... Anxiety model. Stressful events lead to symptoms of anxiety, which can be resolved by coping ...
Some of the pathways of the auditory system that lead from one ear to the cortex. Some of the pathways of the auditory system that lead from one ear to the cortex.
Nutrition-related research findings are often lead stories in newspapers, magazines, and on websites Nutrition-related research findings are often lead stories in newspapers, magazines, and on websites
Video: Type of Transport - Active and Passive Processes

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