PATHOLOGY MCQ
IMMUNE RESPONSE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
CTL
|
|
|
T-Cell
|
|
|
B-Cell
|
|
|
NK
|
Detailed explanation-1: -NK cells are cytotoxic lymphocytes that provide systemic defense against pathogens and malignancy. Although historically considered cells of the innate immune system, NK cells are now known to be capable of memory or memory-like immune responses in certain settings.
Detailed explanation-2: -A type of immune cell that has granules (small particles) with enzymes that can kill tumor cells or cells infected with a virus. An NK cell is a type of white blood cell. Also called natural killer cell and NK-LGL.
Detailed explanation-3: -Natural killer (NK) cells are CD3-negative lymphocytes which do not express antigen-specific receptors at their surface.
Detailed explanation-4: -The correct answer is (a) NK cells cannot kill body cells that lack MHC markers.