Why is antibody-mediated immunity considered to be one type of "adaptive" immunity?
A. The immune system adapts to the presence of specific invaders or antigens by making specific antibodies against those invaders or antigens.
B. The antibody-making cells are more resistant to environmental attacks on the immune system than are the cells involved in either innate immunity or cell-mediated immunity.
C. The immune system is able to adapt to the severity of infection by matching the number of neutrophils and other white blood cells generated with the number of organisms causing the infection.
D. After childhood, the immune system adapts the rate of leukocyte production with the rate of leukocyte destruction to maintain a "steady-state" or constant number of white blood cells for maximum protection against infection.
A
Innate, or native, immunity is a natural feature of a person. This type of immunity cannot be de-veloped or transferred from one person to another and is not an adaptive response to exposure or invasion by foreign proteins. Adaptive immunity is the immunity that a person's body makes (or can receive) as an adaptive response to invasion by organisms or foreign proteins.
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