any change, other than an injury, that disrupts the normal functions of the body
an organism that causes disease
compound that blocks the growth and reproduction of bacteria
organisn that carries pathogens from person to person
nonspecific defense reaction to tissue damage caused by injury or infection
foreign molecule that triggers an immune response
specific immunity produced by B cells that produce antibodies that circulate in body fluids
type of immunity produced by T cells that attack infected cells
protein that helps destroy pathogens
injection of a weakened or mild form of a pathogen to produce immunity
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