Natural Killer Cell
natural killer cell
"Natural killer cells are cells that resemble large granular lymphocytes.  They do not express markers of either T or B cell lineage. They are positive for CD16, CD56, and CD 94.  These cells do possess Fc receptors for IgG and can kill target cells using antibody-dependent cell-mediated cytotoxicity. They can also use perforin to kill cells in the absence of antibody and killing may occur without previous sensitization."