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IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
There are 60,000 miles of blood vessels in every adult human.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.