natural killer cell


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

First Known Use of NATURAL KILLER CELL

1975

natural killer cell

noun    (Medical Dictionary)

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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