OBJECTIVE LIFE SCIENCE
SIGNALLING IMMUNOLOGY CANCER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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NK cells
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Mast cells
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Phagocytes
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Granulocytes
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Detailed explanation-1: -Natural Killer cells: Natural Killer cells (NK cells), do not attack pathogens directly. Instead, natural killer cells destroy infected host cells in order to stop the spread of an infection.
Detailed explanation-2: -NK cells are major antiviral lymphocytes that substantially contribute to the host innate immune system and inflammatory cytokine production. In the early phase of infections, NK cells rapidly respond to pathogens before the development of adaptive immune responses 22, 23.
Detailed explanation-3: -Upon activation and recruitment to the site of infection, NK cells employ three main strategies to kill virally infected cells: the production of cytokines, the secretion of cytolytic granules, and the use of death receptor-mediated cytolysis [8].