English Dictionary

natural killer cell

noun

(immunology) Any cell that expresses cell surface receptors that deliver signals to either activate or inhibit a response as part of the innate immune system.

Natural killer cells are a type of white blood cell that play a critical role in the immune system.

意味（1）

(immunology) Any cell that expresses cell surface receptors that deliver signals to either activate or inhibit a response as part of the innate immune system.

While such information doesn't assist us in deciding whether natural killer cells derive from a macrophage or T cell lineage, it does tell us that the mouse natural killer cell system is a thymus dependent system.