Chapter 19

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1. Healthy immune system destroys cancer cells with

CTL's and activated macrophages

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2. A positive tuberculin skin test is an example of

Delayed cell-mediated immunity

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3. All of the following are considered examples of type I hypersensitivity EXCEPT

Transplant rejections

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4. Allergic contact dermatitis is due to

Sensitized T cells

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5. Attachment of HIV to the target cell depends on

gp120 combining with CD4+ receptor

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6. Desensitization involved injection of

Antigens

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7. During the asymptomatic phase I of HIV disease, HIV infection diagnosed by

Detecting viral RNA

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8. In rheumatoid arthritis, IgM, IgG and complement deposit in joints. This is an example of

Immune complex autoimmunity

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9. In the serological method for tissue typing, if human cells expressing HLA-I are mixed with anti HLA-I, complement, and trypan blue, what would indicate the cells are HLA-I

Trypan blue enters the cells

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10. Rheumatoid arthritis is due to deposition of

Complexes of IgM and IgG and also complement in joints

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11. The chemical mediators of anaphylaxis are

Found in basophils and mast cells

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12. The number of T cells drops to below 200 cells/microliter in which phase of HIV infection

Phase 3

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13. The process of desensitization to prevent allergies involved the injection of increasing amounts of

Antigen

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14. Treatment with certain drugs to reduce transplant rejection can cause

Immunosuppression

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15. When testing donated blood for compatibility you would find a person with O type blood

Will lack A & B red blood cell antigens

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16. Which antibodies will be in the serum of a person with blood type B, RH+?

anti-A

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17. Which of the following is the least likely vaccine against HIV?

Attenuated Virus

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18. Which of the following statements about type I reactions of False?

They involve helper T Cells

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19. Which of the following statements about type IV reactions is False?

Hemolytic disease of the newborn is an example

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20. Which of the following types of transplant is least compatible?

xenotransplant