The leukocytes called natural killer lymphocytes
A) respond to the coating of a pathogen by complement.
B) release prostaglandins and leukotrienes in response to microbes.
C) increase in allergies and helminth infection.
D) are nonspecific leukocytes that secrete toxins onto the surface of virally infected cells.
E) are specialists in killing bacteria.

Question

Quizplus · Accepted Answer

Natural killer (NK) cells are a type of lymphocyte that play a crucial role in the innate immune system by targeting and destroying virally infected cells and tumor cells through the release of cytotoxic granules. They do not require prior sensitization to specific antigens, making them nonspecific in their action.

The Leukocytes Called Natural Killer Lymphocytes