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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
The familiar sounds of your heart are made by the heart's valves as they open and close.
On average, the stomach produces 2 L of hydrochloric acid per day.
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.
Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.