Morning sunlight falls on the facade of the New York Stock Exchange (NYSE) building in Manhattan in New York City, New York, U.S., January 28, 2021. REUTERS/Mike Segar/File Photo The S&P 500 ...

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NK cells are key mediators of immune cell-mediated cytotoxicity toward infected and transformed cells, being one of the main executors of cell death in the immune system. NK cells recognize target ...