Which lymphocytes lack specificity for antigen and attack cancer cells and virus-infected cells?
A. Natural killer (NK) cells
B. Cytotoxic T cells
C. Helper T cells
D. Delayed hypersensitivity T cells
Select your answer:
Topics:
Bacteria & Viruses Pathophysiology - Adaptive Immunity Limitation of Senses Principles of Microbiology Consciousness and Sleep Disease as a Failure of Homeostasis Cell Theory & Melanoma Skills for Health Cell The Nervous System The Chemistry of Microbiology Tissues Muscle Origin, Insertion, and Function Latin & Greek in Medicine Psychology, Psychiatry, & Social WorkOther quiz:
Neuroanatomy › ViewWhich of the following uses the ligand gated ion channels.
A. Photons of light activating an ion channel with photoreceptors of the retina.
B. Hair cells in the cochlea vibrate in response to sound to activate an ion channel.
C. In the spike initiation zone, or axon hillock, the membrane potential becomes sufficiently depolarized to activate an action potential.
D. GABA is released from vesicles of the presynaptic terminal causing an increase in chloride ions on the post synaptic membrane.
World Health Day › View
There are many vitamins and minerals needed to maintain a healthy body. What is the best way for a person to get all of the vitamins and minerals that are needed?
A. Eat a variety of healthy foods.
B. Drink a lot of water.
C. Eat only vegetables.
D. Exercise everyday.