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Innate and adaptive immunity against a virus explained. A, Innate immunity comprises of mechanisms to recognize viral intermediates and respond by secreting IFNs. B, Innate immune cells like macrophages and DCs are also the link to the adaptive immunity that ultimately is responsible for clearing the virus infection. NK cells monitor for virus‐infected cells and secrete type II IFN, IFN‐γ besides actively killing the infected cells (Brandstadter & Yang, 2011)
