Answer :
Both innate and adaptive immune responses are part of the immune system.
Natural innate immunity develops as a result of genetics or physiology; it is unrelated to illness or immunization and serves to lighten the strain on the adaptive immune system. Intricate cell-to-cell communication, secreted proteins, and receptor-mediated signaling are all components of the immune response at both the innate and adaptive levels. Around a billion years ago, the innate immune system began to evolve in animals as an important defense against infection. A small number of distinct pathogens are the only targets for innate immunity; each pathogenic threat sets off a predictable chain of processes that can detect the pathogen type and either clear the infection on its own or mobilize a highly focused adaptive immune response. For instance, mucus and tears have microbicidal properties.
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