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Questions and Answers
What type of cells do natural killer (NK) cells kill?
What type of cells do natural killer (NK) cells kill?
- Only tumor cells
- Only virus-infected cells
- Both tumor cells and virus-infected cells (correct)
- Only healthy cells
Which receptors do NK cells use to recognize abnormal cells?
Which receptors do NK cells use to recognize abnormal cells?
- Cell activating receptor and cell inhibiting receptor
- Antigen binding receptor and antigen disabling receptor
- Kill activating receptor and kill inhibiting receptor (correct)
- Antigen activating receptor and antigen inhibiting receptor
What happens if the kill inhibiting receptor binds to a 'self' antigen on a normal, healthy cell?
What happens if the kill inhibiting receptor binds to a 'self' antigen on a normal, healthy cell?
- It activates the killing action
- It has no effect on the cell
- It triggers apoptosis in the cell
- It turns off the killing action (correct)
How do NK cells recognize abnormal cells using the kill activating receptor?
How do NK cells recognize abnormal cells using the kill activating receptor?
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Which type of immunity do NK cells qualify as agents of?
Which type of immunity do NK cells qualify as agents of?
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