bio lecture 13 - – Develops naturally – After...

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Click to edit Master subtitle style BIO 311D LECTURE 13 (Animal) defense systems
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Innate immunity
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Innate immunity External defenses Physical barriers Mucus production Secretions from skin and mucous membranes Acidity Lysozyme
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Internal defenses Phagocytosis Macrophages Innate immunity, cont.
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The lymphatic system
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Antimicrobial proteins Cause lysis, help trigger inflammation Interferons
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Inflammatory response Histamine and other chemicals released
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Natural killer cells Patrol and attack Trigger apoptosis
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Acquired immunity Lymphocytes - B cells, T cells Antigens Antibodies Epitopes
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Primary immune response Clonal selection of B cells
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Secondary immune response
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Summary of acquired immune system response
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Active and Passive Immunization Active immunity
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Unformatted text preview: – 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 responses: Rheumatoid arthritis Lupus Immunodeficiency diseases – Inborn or primary immunodeficiency – acquired or secondary immunodeficiency Ø Acquired Immunodeficiency Syndrome (AIDS) Compare to: Plant responses to pathogens External physical barrier Recognition of pathogen molecules Hypersensitive response – programmed death of infected cells and antibiotic production Systemic acquired...
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This note was uploaded on 03/20/2011 for the course BIOLOGY 311D taught by Professor Zhaimingzhao during the Fall '10 term at University of Texas.

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bio lecture 13 - – Develops naturally – After...

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