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Did you know?
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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Everyone has one nostril that is larger than the other.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
![Results from sequential study of two cohorts tested at three ages and at three different points in t](https://biology-forums.com/gallery/47/medium_6_31_05_15_8_20_43_219751572.jpeg)
![A typical direct-injection system uses two pumps—one low-pressure electric pump in the fuel tank ...](https://biology-forums.com/gallery/30/medium_548020_31_05_17_1_51_45_30018512.png)