Antibodies are proteins in the blood which are involved in the immune response - they help to fight disease.
Antibodies are made by a type of white blood cell called lymphocytes, which "stick" to the surface of the invading bacteria or other disease-causing organism, either causing it to die, or preparing it to be ingested by other types of white blood cells, called phagocytes.
We are born with a certain number of antibodies to infection. Others are acquired through breast milk, through exposure to disease, by undergoing medical immunization, or by random mutation.
Anne Evans
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