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Vaccines and Interferons

Natural kille...

Question

Natural killer cells are able to bind to tumor cells and virus-infected cells and kill them. True or False?

A

True

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B

False

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Solution

The correct option is A True
Natural killer cells (NK cells) are the cells of innate immunity. These cells are capable of binding to tumor cells and virus-infected cells and they kill the infected cells by inserting certain types of granules.

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Q. Assertion :Phagocyte cells digest microbes and debris. Reason: Natural Killer cells destroy virus-infected cells and tumour cells.

State whether true or false:
T cells kill cancer cells in the same way as they kill virus-infected cells.

State whether true or false:
Virus infected cells also use the MHC for displaying their peptides.

Q. There is great genetic variation among types of viruses, and every species on Earth has its own unique category of viruses that are able to infect it. Furthermore, within a single species, viruses exhibit specificity for unique cell types.
For example, Human Immunodeficiency Virus (HIV) infects T-helper immune cells and Human Papilloma Virus (HPV) primarily infects the squamous epithelial cells that line the outside (skin) and inside of body cavities. The image above illustrates the basic structure of an animal virus:
Which of the following best explains the specificity of viral infection?

T cells kill cancer cells in the same way as they kill virus infected cells

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