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  2. Cryptococcosis - Wikipedia

    en.wikipedia.org/wiki/Cryptococcosis

    A positive cryptococcal antigen test may precede symptoms by 3 weeks in those with HIV/AIDS. Others may have re-activation of latent cryptococcal disease years later. In those with HIV, approximately 50% of people have a fever, but fever is rare in previously healthy and immunocompetent people with cryptococcosis.

  3. Latex fixation test - Wikipedia

    en.wikipedia.org/wiki/Latex_fixation_test

    This response occurs when the body detects a pathogen and forms an antibody specific to an identified antigen (a protein configuration) present on the surface of the pathogen. [ citation needed ] Agglutination tests, specific to a variety of pathogens, can be designed and manufactured for clinicians by coating microbeads of latex with pathogen ...

  4. Hook effect - Wikipedia

    en.wikipedia.org/wiki/Hook_effect

    The hook effect refers to the prozone phenomenon, also known as antibody excess, or the postzone phenomenon, also known as antigen excess. It is an immunologic phenomenon whereby the effectiveness of antibodies to form immune complexes can be impaired when concentrations of an antibody or an antigen are very high.

  5. Fungemia - Wikipedia

    en.wikipedia.org/wiki/Fungemia

    Infections by other fungi, including Saccharomyces, Aspergillus (as in aspergillemia, also called invasive aspergillosiis) and Cryptococcus, are also called fungemia. It is most commonly seen in immunosuppressed or immunocompromised patients with severe neutropenia, cancer patients, or in patients with intravenous catheters.

  6. Cryptococcus neoformans - Wikipedia

    en.wikipedia.org/wiki/Cryptococcus_neoformans

    Cryptococcus neoformans is an encapsulated basidiomycetous yeast [1] belonging to the class Tremellomycetes and an obligate aerobe [2] that can live in both plants and animals. Its teleomorph is a filamentous fungus , formerly referred to Filobasidiella neoformans .

  7. Opportunistic infection - Wikipedia

    en.wikipedia.org/wiki/Opportunistic_infection

    Cryptococcus neoformans is a fungus that causes cryptococcosis, which can lead to pulmonary infection as well as nervous system infections, like meningitis. [25] [26] Histoplasma capsulatum is a species of fungus known to cause histoplasmosis, which can present with an array of symptoms, but often involves respiratory infection. [27] [28]

  8. Human blood group systems - Wikipedia

    en.wikipedia.org/wiki/Human_blood_group_systems

    The term human blood group systems is defined by the International Society of Blood Transfusion (ISBT) as systems in the human species where cell-surface antigens—in particular, those on blood cells—are "controlled at a single gene locus or by two or more very closely linked homologous genes with little or no observable recombination between them", [1] and include the common ABO and Rh ...

  9. Viral culture - Wikipedia

    en.wikipedia.org/wiki/Viral_culture

    Viral culture is a laboratory technique [1] in which samples of a virus are placed to different cell lines which the virus being tested for its ability to infect. If the cells show changes, known as cytopathic effects, then the culture is positive.

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