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7 Cards in this Set
- Front
- Back
What is the humoral immune response? What cells are involved? What molecules are involved?
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Involves B-lymphocytes
effective against extracellular invaders (bacteria and bacterial toxins) Defense by antibodies |
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what is the cell-mediated immune response? What cells are involved? What molecules are involved?
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involves T-lymphocytes
effective against infected cells and cancer cells Defense by cell-to-cell interaction |
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What are some similarities between the humoral and cell-mediated immune response?
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Both acquired immunity, regulated by helper T cells
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Why does it take at least two weeks for the flu vaccine to become effective at preventing the disease?
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the primary immunization takes a while to complete
Sufficient time must pass to allow the primary immune response to kick in to produce memory B-cells, to prime the system for the secondary immune response (which is necessary for preventing the disease). A primary response alone is not likely to be sufficient to prevent disease. |
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Describe the role of each of the following types of immune cells: (a) plasma cells, (B) memory B-lymphocytes, (C) cytotoxic T-cells, (D) macrophages.
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Plasma cells kill pathogens, then die (humoral), memory B lymphocytes are stored and used for secondary response (humoral), cytotoxic T-cells are involved in cell mediated immunity and kill by cell to cell contact, macrophages are phagocytic involved in acquired and innate immunity.
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What is the difference between a B-cell and an antibody?
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Antibodies are proteins produced by B cells; Each B-cells produces only a single type of antibody.
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8. What is the difference between a pathogen and an antigen?
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Pathogens are invading organisms, antigens are protiens associated with pathogens
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