killer cell

synonym: K cell
https://doi.org/10.1351/goldbook.13361
Cell that displays cell-mediated cytotoxicity, including cytotoxic T lymphocytes (CTL, Tc), natural killer (NK) cells, and natural killer T (NKT) cells. Some also consider activated macrophages, monocytes, and interferon (IFN)-activated neutrophils to be killer cells.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1199 [Terms] [Paper]