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1 | | Nonspecific immunity is provided by all of the following except |
| | A) | Kupffer cells. |
| | B) | Alveolar macrophages. |
| | C) | B lymphocytes. |
| | D) | Neutrophils |
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2 | | Which of the following is not a characteristic of T lymphocytes? |
| | A) | Surface antigens are present on the cell. |
| | B) | They are in high concentration in blood and lymph. |
| | C) | They provide cell-mediated immunity. |
| | D) | They have a relatively long life span. |
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3 | | Immediate hypersensitivity reactions to allergens could be prevented by blocking the actions of |
| | A) | IgA. |
| | B) | IgD. |
| | C) | IgE. |
| | D) | IgG. |
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4 | | Complement protein 1 is activated when which two antibodies bind to antigens on cell membranes? |
| | A) | IgA and IgE. |
| | B) | IgD and IgM. |
| | C) | IgG and IgD. |
| | D) | IgG and IgM. |
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5 | | During a local inflammatory response |
| | A) | mast cells engulf particulate matter for degradation. |
| | B) | histamine is released and stimulates increased capillary permeability. |
| | C) | monocyte concentration in the local area increases rapidly. |
| | D) | all of the above occur. |
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6 | | Active immunity |
| | A) | is provided by injection of anti-toxins. |
| | B) | develops within minutes after exposure to the antigen. |
| | C) | is relatively long lasting. |
| | D) | may be produced through a vaccination. |
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7 | | Perforins |
| | A) | are released by suppressor T cells to inhibit B cell activity. |
| | B) | are released by mast cells to induce chemotaxis. |
| | C) | are released by cytotoxic T cells when bound to victim cells to destroy the victim cell. |
| | D) | are released by helper T cells to increase the immune response. |
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8 | | Growth of B cells and resting T cells is stimulated by |
| | A) | interleuken-4. |
| | B) | interferons. |
| | C) | tumor necrosis factor. |
| | D) | colony-stimulating factors. |
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9 | | Which of the following groupings correctly associates the coreceptor, cell and MHC class? |
| | A) | CD4 coreceptor, helper T cell, class-1 MHC. |
| | B) | CD4 coreceptor, helper T cell, class-2 MHC. |
| | C) | CD8 coreceptor, helper T cell, class-1 MHC. |
| | D) | CD8 coreceptor, helper T cell, class-2 MHC. |
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10 | | Tumors |
| | A) | can be treated using glucocorticoids. |
| | B) | may grow more rapidly in an individual subjected to stress. |
| | C) | always undergo metastasis. |
| | D) | can be diagnosed using alpha-fetoprotein if originating in the colon. |
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11 | | Autoimmune diseases |
| | A) | include Grave's disease, rheumatic fever, myasthenia gravis, and aspermatogenesis. |
| | B) | occur when the body stops producing antibodies. |
| | C) | result in hypersensitivity to specific antigens. |
| | D) | can be treated with antihistamines. |
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12 | | Delayed hypersensitivity |
| | A) | requires the actions of B lymphocytes. |
| | B) | is mediated by increased production of IgE. |
| | C) | can be treated with antihistamines. |
| | D) | is mediated by the production of lymphokines. |
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