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Lecture 15 immune system posted

Lecture 15 immune system posted - antibodies Active and...

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BIO 311D LECTURE 15 The immune system
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Innate immunity Acquired immunity
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External defenses Innate immunity Physical barriers Mucus production Secretions from skin and mucous membranes Acidity Lysozyme
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Internal defenses Phagocytosis Macrophages
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Antimicrobial proteins cause lysis, help trigger inflammation Interferons
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Inflammatory response Local - histamine and other chemicals released
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Natural killer cells Patrol and attack Trigger apoptosis
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article
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Acquired immunity Lymphocytes – recognize antigens B cells, T cells
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Primary immune response Clonal selection of B cells
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Secondary immune response
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Unformatted text preview: antibodies Active and Passive Immunization Active immunity – Develops naturally – After immunizations Passive immunity – Immediate, short-term protection – Conferred naturally or artificially Self, nonself • Cells from other individuals • Transplanted tissues • Blood transfusion Allergies anaphylactic shock Autoimmune Diseases Rheumatoid arthritis Immunodeficiency diseases – Inborn or primary immunodeficiency – acquired or secondary immunodeficiency Acquired Immunodeficiency Syndrome ( AIDS )...
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