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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.
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The longest a person has survived after a heart transplant is 24 years.
![The conduction system of the heart; traces the path of the electrical impulse that stimulates the he](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_22_09_85202259.jpeg)
![The first commercially successful typewriter, manufactured in quantity beginning in 1874, surely fue](https://biology-forums.com/gallery/47/medium_376716_26_08_15_11_14_05_224411209.jpeg)