Dictionary
natural killer cell
noun
Definition of NATURAL KILLER CELL
: a large granular lymphocyte capable of killing a tumor or microbial cell without prior exposure to the target cell and without having it presented with or marked by a histocompatibility antigen —called also NK cell
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First Known Use of NATURAL KILLER CELL
1975
Medical Dictionary
natural killer cell
noun
Medical Definition of NATURAL KILLER CELL
: a large granular lymphocyte capable especially of destroying tumor cells or virally infected cells without prior exposure to the target cell and without having it presented with or marked by a histocompatibility antigen—called also NK cell
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