natural killer cell

noun 0.924

killer

noun 0.654

contract killer

noun 0.584

hunter-killer

noun 0.569

neurokinin

noun 0.563

cytotoxic

noun 0.561

granzyme

noun 0.559

neutrophil

noun 0.557

kill

noun 0.550

serial killer

noun 0.549

cytotoxin

noun 0.546

lymphokine

noun 0.538

innate immune system

noun 0.534

cytokine

noun 0.533

granulocyte

noun 0.531

nuclease

noun 0.530

lymphocyte

noun 0.524

killing

noun 0.521

weedkiller

noun 0.521

annihilator

noun 0.515

white blood cell

noun 0.511

oncolytic

noun 0.508

cytotoxicity

noun 0.504

neuraminidase

noun 0.502

staphylokinase

noun 0.502