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Immunological Surveillance by Natural Killer Cells - lecture

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Immunological Surveillance by Natural Killer Cells - lecture

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Questions and Answers

What is the main function of natural killer cells in immunological surveillance?

To selectively identify abnormal cells

To release cytokines to stimulate immune response

To engulf and digest abnormal cells

To identify and attach to abnormal cells in a non-selective manner (correct)

What is the role of the Golgi apparatus in natural killer cells during immunological surveillance?

To form cytokines

To form perforin vesicles (correct)

To engulf and digest abnormal cells

To selectively identify abnormal cells

What happens when perforin vesicles in natural killer cells are released during immunological surveillance?

They engulf abnormal cells

They release cytokines

They lyse abnormal cell membranes (correct)

They selectively identify abnormal cells

How do natural killer cells identify cancer cells during immunological surveillance?

By selectively identifying tumor-specific antigens Signup and view all the answers

What types of abnormal proteins on cell membranes allow natural killer cells to identify and destroy cells infected with viruses during immunological surveillance?

Viral-specific antigens Signup and view all the answers

Which organelle in natural killer cells forms perforin vesicles during immunological surveillance?

Golgi apparatus Signup and view all the answers

What is the function of perforin in natural killer cells during immunological surveillance?

To lyse abnormal cell membranes Signup and view all the answers

What is the main difference between how natural killer cells and T cells identify abnormal cells during immunological surveillance?

T cells are selective while natural killer cells are non-selective Signup and view all the answers

What is the function of cytokines in natural killer cells during immunological surveillance?

To stimulate immune response Signup and view all the answers

Which of the following is a characteristic of natural killer cells during immunological surveillance?

Non-selective identification of abnormal cells Signup and view all the answers

What is the main function of immunological surveillance by natural killer cells?

To identify and attach to abnormal cells in a non-selective manner Signup and view all the answers

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