Microcheck 168

Natural killer (NK) cells can mediate antibody-dependent cellular cytotoxicity (ADCC). NK cells also kill cells not bearing MHC class I molecules on their surface.

■ What mechanism do NK cells use to kill "self" cells?

■ What can cause a "self" cell to not bear MHC class I molecules on its surface?

■ What selective advantage would a virus have if it interferes with the process of antigen presentation?

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