5 Questions
What type of cells do natural killer (NK) cells kill?
Both tumor cells and virus-infected cells
Which receptors do NK cells use to recognize abnormal cells?
Kill activating receptor and kill inhibiting receptor
What happens if the kill inhibiting receptor binds to a 'self' antigen on a normal, healthy cell?
It turns off the killing action
How do NK cells recognize abnormal cells using the kill activating receptor?
By binding to common surface molecules found on cells
Which type of immunity do NK cells qualify as agents of?
Innate nonspecific immunity
Test your knowledge of innate immunity and nonspecific defenses with this quiz. Explore the mechanisms and characteristics of the body's natural defense system.
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