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  1. en.wikipedia.org › wiki › AntibodyAntibody - Wikipedia

    Each antibody binds to a specific antigen in a highly specific interaction analogous to a lock and key.. An antibody (Ab) is the secreted form of a B cell receptor; the term immunoglobulin (Ig) can refer to either the membrane-bound form or the secreted form of the B cell receptor, but they are, broadly speaking, the same protein, and so the terms are often treated as synonymous.

  2. May 6, 2022 · Learn what antibodies are, how they protect you from foreign substances and what types of antibodies exist. Find out how monoclonal antibodies, COVID antibodies and thyroglobulin antibodies can affect your health.

  3. Apr 27, 2024 · Antibodies are protective proteins produced by the immune system in response to foreign substances, called antigens. Learn how antibodies work, how they are produced by B cells, and how they recognize and neutralize antigens.

    • The Editors of Encyclopaedia Britannica
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  4. Aug 11, 2021 · Antibodies are disease-fighting proteins that recognize and bind to foreign invaders, such as bacteria and viruses. Learn about their structure, types, location, function, and how to test for them.

    • Gillian D'souza
  5. Oct 31, 2023 · Figure 42.13.1 42.13. 1: Mechanisms of antibody action: Antibodies may inhibit infection by (a) preventing the antigen from binding to its target, (b) tagging a pathogen for destruction by macrophages or neutrophils, or (c) activating the complement cascade. Antibodies also mark pathogens for destruction by phagocytic cells, such as macrophages ...

  6. Antibody - Structure, Classes, Function: Each antibody molecule is essentially identical to the antigen receptor of the B cell that produced it. The basic structure of these proteins consists of two pairs of polypeptide chains (lengths of amino acids linked by peptide bonds) that form a flexible Y shape. The stem of the Y consists of one end of each of two identical heavy chains, while each ...

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  8. 3 days ago · Antibody is a part of the host cell's defense. It's made by a certain type of white blood cell that's called a B cell. The structure of the antibody consists of two light chains and two heavy chains, and at the very tip of the antibody is a hypervariable region, and this hypervariable region allows the antibody to make different types of antibodies that will respond to all of the antigens that ...

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