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  1. 2023年11月21日 · Seven coronaviruses can infect humans. The one that causes SARS emerged in southern China in 2002 and quickly spread to 28 other countries.

    • Linda Rath
  2. May 6, 2002 -- There's something in the air and while it may not be love, some say it's the next best thing -- negative ions. Negative ions are odorless, tasteless, and invisible molecules that...

  3. Overview. L-carnitine is a chemical that is made in the human brain, liver, and kidneys. It helps the body turn fat into energy. L-carnitine is important for heart and brain function, muscle ...

  4. 2023年8月17日 · Low blood pressure, also known as hypotension, can cause dizziness, fainting, and fatigue. Discover the causes, symptoms, and treatment options in this comprehensive guide.

  5. 2022年8月3日 · AIDS, the disease caused by HIV, first emerged in the U.S. in the early 1980s. Since then, advances in HIV treatment has turned it from a deadly infection to a lifelong condition that can be managed.

  6. 2023年12月6日 · They don't pouch out in a dome shape. Instead, they make a widened spot in the blood vessel. This type of an aneurysm causes all sides of the artery to bulge. Mycotic aneurysms are caused by a ...

  7. 2023年8月3日 · At a certain point, as your blood cells decrease, symptoms often develop. Depending on the cause of the anemia, symptoms may include: Dizziness, lightheadness, or feeling like you are about to ...

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