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Immunological Memory and Cytokine Roles Quiz

12 Questions

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Immunological Memory and Cytokine Roles Quiz

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Questions and Answers

Which cytokines have been shown to maintain memory cells?

IL-2 and IL-4

IL-6 and IL-8

IL-10 and IL-12

IL-7 and IL-15 (correct)

How do most memory cells exist?

In a dividing state

In an activated state

In a resting state (correct)

In a migrating state

What allows pathogens to escape immune defenses?

Antigenic variation (correct)

IL-2 and IL-4 production

IL-7 and IL-15 production

Stimulation of memory cells

How do some viruses persist within the host?

By ceasing to replicate until immunity wanes Signup and view all the answers

How does Mycobacterium tuberculosis (TB) survive within the host?

By preventing fusion of phagosome and lysosome Signup and view all the answers

What kind of infections suggest a defect in host defense mediated by T lymphocytes?

Recurrent viral infections Signup and view all the answers

What can result from defects in complement components?

Defective humoral immune function Signup and view all the answers

What does human immunodeficiency syndrome (HIV) infect?

CD4 T cells, dendritic cells, and macrophages Signup and view all the answers

What confers resistance to HIV infection?

Genetic deficiency of the macrophage chemokine coreceptor (CCR5) Signup and view all the answers

What does the integration of HIV DNA into the host genome depend on?

Host-cell transcription factors induced upon activation of infected T cells Signup and view all the answers

What leads to a rapid increase in CD4 cells and decrease in virus titre in HIV treatment?

Drugs that block HIV replication Signup and view all the answers

What is allergy mediated by?

IgE Signup and view all the answers