Natural killer cell

A) First cell to enter infected tissue
B) Will become macrophage in tissue
C) Lyses tumor and virus-infected cells
D) Cell that increases in number during a parasitic infection
E) Nonmotile cells in connective tissue that promote inflammation

Natural Killer Cell

A type of lymphocyte in the immune system capable of killing certain infectious organisms and tumor cells without prior immunization.

Lyses Tumor

The breakdown or destruction of tumor cells, often through chemical, biological, or physical means.

Virus-infected Cells

Cells that have been invaded by viruses, which hijack the cells' machinery to replicate and produce more viruses.