Immunology Final Exam Questions with 100% Correct Answers | Latest Version 2024 | Verified

Which of the following is NOT TRUE about NK cells? a. Possess cytoplasmic granules containing perforin and granzymes. b. NK cells are involved in the early response to infection with certain viruses and intracellular bacteria and can kill tumor cells. c. NK cells are lymphoid cells. d. Similar to T and B cells, activated NK cells proliferate and differentiate into separate effector cells in order to function. e. Make up 10-15% of human peripheral blood cells. - d. Similar to T and B cells, activated NK cells proliferate and differentiate into separate effector cells in order to function. Which of the following is NOT TRUE about NK cells and various cytokines? a. NK cells produced TNF can mediate cytotoxicity. b. NK cell produced IFN-gamma enhances Th2 cell development. c. Resting NK cells don't usually acquire significant cytolytic competence until they are primed through exposure to cytokines. d. NK activity is stimulated IFN-alpha, IFN-beta, & IL-12. e. NK cells produce IFN-gamma upon activation which can influence the innate immunity by activation of macrophages. - b. NK cell produced IFN-gamma enhances Th2 cell development.