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Antibodies
Proteins produced by the immune system to neutralize or destroy foreign substances like bacteria and viruses.
Immune Function
The activities performed by the immune system to protect the body against disease-causing organisms and substances.
Antigens
Substances that the immune system recognizes as foreign or dangerous, eliciting an immune response, often found on pathogens or produced by them.
Leukocytes
White blood cells, part of the immune system, involved in protecting the body against both infectious disease and foreign invaders.
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