Innate lymphoid cells and NK cells are effector cells that respond rapidly after encountering a pathogen. Several different subsets of innate lymphoid cells exist, and each is specialized to respond to a category of pathogen (e.g., viruses, extracellular bacteria, helminthic parasites, etc). Innate lymphoid cells reside primarily in tissues such as the lungs, the lining of the gastrointestinal tract, and the skin, because these sites represent the major routes of entry of pathogens into the body.

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Innate lymphoid cells and NK cells are effector cells that respond quickly to pathogens, and different subsets of innate lymphoid cells are specialized to respond to specific categories of pathogens. These cells are primarily found in tissues that represent common routes of entry for pathogens.

Innate Lymphoid Cells and NK Cells Are Effector Cells That