simian immunodeficiency virus

noun 0.661

lentivirus

noun 0.564

retrovirus

noun 0.544

lentiviral

noun 0.539

virus

noun 0.535

herpes simplex

noun 0.518

poliovirus

noun 0.514

retroviral

noun 0.512

computer virus

noun 0.510

avian flu

noun 0.509

human leukocyte antigen

noun 0.508

prion protein

noun 0.506

avian influenza

noun 0.505

virion

noun 0.505

antiretroviral

noun 0.502

immunoglobulin

noun 0.502