Immune surveillance by NK cells Blank______.Multiple choice question.is a potent anti-cancer defenserequires large numbers of target cellsis the most efficient defense against parasitic infectionsinvolves indirect attacks on tumor cells

The correct answer is "is a potent anti-cancer defense".

Natural Killer (NK) cells are a type of lymphocyte (a white blood cell) and a component of innate immune system. NK cells play a major role in the host-rejection of both tumors and virally infected cells. They are named for their natural ability to kill cancer cells and virus-infected cells, and they don't need to recognize a specific antigen before springing into action. This makes them a potent anti-cancer defense in our immune system.

The correct answer is "is a potent anti-cancer defense".

Natural Killer (NK) cells are a type of lymphocyte (a white blood cell) and a component of innate immune system. NK cells play a major role in the host-rejection of both tumors and virally infected cells. NK cells are known to be a potent anti-cancer defense due to their ability to recognize and kill a variety of cancer cells without prior sensitization to a specific antigen, contributing to immune surveillance.