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In the absence of externalities, the "invisible hand" leads a market to maximize
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.
Neutrophils
A type of white blood cell that plays a pivotal role in defending the body against infection by ingesting bacteria and fungi.
Monocytes
A type of white blood cell that plays a key role in the immune response by phagocytizing pathogens and dead cells.
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Q454: Refer to Figure 10-16. This graph shows