QUESTION 5 Toxoid vaccines, such as the vaccines against diphtheria and tetanus,

Question

QUESTION 5 Toxoid vaccines, such as the vaccines against diphtheria and tetanus, elicit a(n) A. Tc cell response. B. immune complex. C. dendritic cell proliferation D.antibody response against these bacterial toxins. E. antibody response against gram-positive bacteria QUESTION 6 Hemolytic disease of the newborn can result from an o A. Rh+ mother with an Rh- fetus C. B. Rh-mother with an Rh+ fetus o C. AB mother with a B fetus. D.AB mother with an O fetus. o E. Rh- mother and an A fetus. QUESTION 7 Which of the following statements about type I reactions is FALSE? A. They involve helper T cells. B. They involve IgE antibodies. o C. The symptoms are due to histamine. D.Antibodies bind to mast cells and basophils. E. The symptoms occur soon after exposure to an antigen. QUESTION 8 The process of desensitization to prevent allergies involves the injection of increasing amounts of A.IgE. o C.antihistamine D.antigen E. RhoGAM QUESTION 9 The number of T cells drops to below 200 cells/microliter in which phase of HIV infection? A.phase 1 B. phase 2 C.phase 3 D. initial phase E. asymptomatic phase

Explanation / Answer

Answer 5: antibody response against these bacterial toxins

Answer 6: Rh negative with an Rh positive fetus

Answer 7: They involves helper T-cells

Answer 8: Antigen

Answer 9: Phase 3

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