The following feature is common to both cytotoxic T cells and NK cells:
Answer is B (Effective against virus infected cells) : Common to both cytotoxic T cells and NK cells is affectivity against virus infected cells. Natural Killer cells: Are first line of defense against virus laden cells and neoplastic cells. Cytotoxicity is not MHC restricted. Cvtotoxic T cells: They are antigen specific T cells whose function is to produce antigen specific lysis of target cells by direct cell-tocell contact. Are usually CD + class I MHC restricted T cells. Are impoant in defense against viral infections of tissues. Thus the feature common to both cytotoxic T cells and NK cells is affectivity against virus infected cells.
Synthesize antibody
Require antibodies to be present for action
Effective against virus infected cells
Recognize antigen in association with HLA class II markers