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An abscess is a pocket of pus that forms around an infection. Pus is a fluid made up of germs (bacteria), white blood cells, and other matter. Draining pus from an infected area or organ inside the body may be needed. This helps heal the infection.

If your healthcare provider thinks you might have adrenal cancer, you will need certain exams and tests to be sure. Here's what you can expect.

After bypass surgery, it's important to get back into the swing, but take it slow.

Dust mites are microscopic organisms that can live and thrive throughout homes and businesses.

Allergies are problems of the immune system. Normally the immune system attacks harmful things such as viruses or bacteria. But sometimes it overreacts and responds to things that are normally harmless. These include dust, mold, pollen, or food.

Often it’s hard to know which medical treatment choices you might face. Would you rather let someone you trust decide for you? A durable power of attorney for health care lets you name an agent to carry out your wishes. This happens only if you can’t express your wishes yourself.

As food moves along the digestive tract, it is digested. This means it's changed into substances that can be absorbed into the bloodstream.

The digestive system breaks food down into basic nutrients that can be used by the body. As food moves through the digestive tract, it's broken down into parts and absorbed into the bloodstream.