Natural killer cells are a group of neutrophils that kill many types of tumor cells and cells infected by different kinds of viruses.
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Q2: The inflammatory response is the body's first
Q3: All antigens have epitopes of the same
Q4: Phagocytosis is a nonspecific defense mechanism.
Q5: The heavy chains in an immunoglobulin molecule
Q6: The combining site on an antibody determines
Q8: Antigens are macromolecules that induce the immune
Q9: The cloning of T cells produces both
Q10: Complement is a chemical produced by cells
Q11: Cytokines include leukotrienes,interferons,and histamine.
Q12: The second stage of B cell development
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