innate immunity


innate immunity

noun

Definition of INNATE IMMUNITY

: immunity possessed by a group (as a species or race) that is present in an individual at birth prior to exposure to a pathogen or antigen and that includes components (as intact skin, salivary enzymes, neutrophils, natural killer cells, and complement) which provide an initial response against infection—called also natural immunity; compare acquired immunity, active immunity, passive immunity

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