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The graph shows the instantaneous velocity of a car during 15 s of its motion. The distance traveled by this car during this 15-s interval is
Immunological Functioning
The overall performance of the immune system in defending the body against pathogens and diseases.
Innate Immune System
The part of the immune system that is present from birth and provides the first line of defense against pathogens through nonspecific physical and chemical barriers as well as immune cells.
Specific Immune System
The part of the immune response that is tailored to recognize and remember specific pathogens, providing targeted and improved defense upon re-exposure.
Pathogen
A microorganism, such as a virus, bacterium, or parasite, that can cause disease in its host.
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