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Core - Biology

    Chapter 24

    Immune System

    24.1 : What is the Immune System?01:38

    24.1 : What is the Immune System?

    Overview The immune system comprises diverse biological structures and processes that protect the body from disease. These processes can be classified ...

    110.2K views
    24.2 : Cell-mediated Immune Responses01:40

    24.2 : Cell-mediated Immune Responses

    Overview The cell-mediated immune system is the host’s primary response against invasive bacteria and viruses that cause intracellular infections. ...

    66.9K views
    24.3 : Humoral Immune Responses01:36

    24.3 : Humoral Immune Responses

    Overview The humoral immune response, also known as the antibody-mediated immune response, targets pathogens circulating in “humors,” or ...

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    24.4 : Antibody Structure01:10

    24.4 : Antibody Structure

    Overview Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced ...

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    24.5 : Affinity and Avidity01:41

    24.5 : Affinity and Avidity

    Overview Antibodies bind to toxins or substances on the surface of cells, bacteria, viruses, or fungi. The substance is called an antigen, and the ...

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    24.6 : Cross-reactivity00:42

    24.6 : Cross-reactivity

    Overview The ability of a single antibody to recognize multiple structurally similar epitopes is an important immune defense strategy that enables the ...

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    24.7 : Allergic Reactions02:06

    24.7 : Allergic Reactions

    Overview We speak of an allergy when the immune system triggers a response against a benign foreign structure, like food, pollen or pet dander. These ...

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    24.8 : Inflammation01:38

    24.8 : Inflammation

    Overview In response to tissue injury and infection, mast cells initiate inflammation. Mast cells release chemicals that increase the permeability of ...

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    24.9 : Vaccinations01:51

    24.9 : Vaccinations

    Overview Vaccination is the administration of antigenic material from pathogens to confer immunity against a specific microorganism. Vaccination primes ...

    44.1K views
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