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  2. Polyclonal B cell response - Wikipedia

    en.wikipedia.org/wiki/Polyclonal_B_cell_response

    If the immune system "remembers" what the other epitopes look like, the antigen, and the organism, will still be recognized and subjected to the body's immune response. Thus, the polyclonal response widens the range of pathogens that can be recognized. [24]

  3. Id reaction - Wikipedia

    en.wikipedia.org/wiki/Id_reaction

    Although there are a multitude of varying appearances, the id reaction often presents with symmetrical red patches of eczema with papules and vesicles, particularly on the outer sides of the arms, face and trunk which occur suddenly and are intensely itchy occur a few days to a week after the initial allergic or irritant dermatitis.

  4. Antigen-antibody interaction - Wikipedia

    en.wikipedia.org/wiki/Antigen-antibody_interaction

    The first correct description of the antigen-antibody reaction was given by Richard J. Goldberg at the University of Wisconsin in 1952. [1] [2] It came to be known as "Goldberg's theory" (of antigen-antibody reaction). [3] There are several types of antibodies and antigens, and each antibody is capable of binding only to a specific antigen.

  5. COVID-19 testing - Wikipedia

    en.wikipedia.org/wiki/COVID-19_testing

    Antigen tests look for antigen proteins from the viral surface. In the case of a coronavirus, these are usually proteins from the surface spikes. [56] SARS-CoV-2 antigens can be detected before onset of COVID-19 symptoms (as soon as SARS-CoV-2 virus particles) with more rapid test results, but with less sensitivity than PCR tests for the virus ...

  6. Antigen - Wikipedia

    en.wikipedia.org/wiki/Antigen

    Antigen can originate either from within the body ("self-protein" or "self antigens") or from the external environment ("non-self"). [2] The immune system identifies and attacks "non-self" external antigens. Antibodies usually do not react with self-antigens due to negative selection of T cells in the thymus and B cells in the bone marrow. [5]

  7. Antibody - Wikipedia

    en.wikipedia.org/wiki/Antibody

    Each antibody binds to a specific antigen in a highly specific interaction analogous to a lock and key.. An antibody (Ab) or immunoglobulin (Ig) is a large, Y-shaped protein belonging to the immunoglobulin superfamily which is used by the immune system to identify and neutralize antigens such as bacteria and viruses, including those that cause disease.

  8. The vaccines are up to 89% effective at preventing lung infections like pneumonia in the first RSV season after someone is vaccinated, the CDC says. RSV vaccine side effects in older adults

  9. Clonal anergy - Wikipedia

    en.wikipedia.org/wiki/Clonal_anergy

    In this test reactions are categorized according to the number of antigens provoking a response and the summed extent of the skin response to all seven antigens. Here anergy is defined as a region of skin reactivity of 0–1 mm, hypoergy as a reaction of 2–9 mm in response to fewer than three antigens, normergic as a reaction of 10–39 mm or ...

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