What are antibodies?
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An antibody, also known as an immunoglobulin, is a large, Y-shaped protein used by the immune system to identify and neutralize foreign objects such as pathogenic bacteria and viruses. The antibody recognizes a unique molecule of the pathogen, called an antigen
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An antibody is a protein produced by the body's immune system when it detects harmful substances, called antigens. ... Each type of antibody is unique and defends the body against one specific type of antigen
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