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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.
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The horizontal fraction bar was introduced by the Arabs.
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There are approximately 3 million unintended pregnancies in the United States each year.
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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.