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  2. Ii antigen system - Wikipedia

    en.wikipedia.org/wiki/Ii_antigen_system

    The Ii antigen system is a human blood group system based upon a gene on chromosome 6 and consisting of the I antigen and the i antigen. [1] The I antigen is normally present on the cell membrane of red blood cells in all adults, while the i antigen is present in fetuses and newborns.

  3. HLA-DQA2 - Wikipedia

    en.wikipedia.org/wiki/HLA-DQA2

    HLA class II histocompatibility antigen, DQ(6) alpha chain is a protein that in humans is encoded by the HLA-DQA2 gene. Also known as HLA-DXA or DAAP-381D23.2 , it is part of the human leukocyte antigen system.

  4. COVID-19 testing - Wikipedia

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

    COVID-19 rapid testing in Rwanda. An antigen is the part of a pathogen that elicits an immune response. 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 ...

  5. Quidel's Recently Approved Antigen Test For Coronavirus Is ...

    www.aol.com/news/quidels-recently-approved...

    Quidel Corporation's (NASDAQ: QDEL) development of an antigen test for the novel coronavirus (COVID-19) is a "game changer" in the world's fight against the pandemic, former Food and Drugs ...

  6. BD Gets CE Mark for Point-of-Care Coronavirus Antigen Test - AOL

    www.aol.com/news/bd-gets-ce-mark-point-143702233...

    BD (BDX) receives CE mark for its rapid, point-of-care, SARS-CoV-2 antigen test for use on the BD Veritor Plus System.

  7. Development of COVID-19 tests - Wikipedia

    en.wikipedia.org/wiki/Development_of_COVID-19_tests

    The development of COVID-19 tests was a major public health priority during the early months of the COVID-19 pandemic. In January 2020, scientists from China published the first genetic sequences of SARS-CoV-2 via virological.org , [ 3 ] a "hub for prepublication data designed to assist with public health activities and research". [ 4 ]

  8. Rapid antigen test - Wikipedia

    en.wikipedia.org/wiki/Rapid_antigen_test

    A COVID-19 Rapid Antigen test(top) with a Covid-19 Rapid Antigen and a Influenza A&B Rapid Antigen Test(bottom) A rapid antigen test (RAT), sometimes called a rapid antigen detection test (RADT), antigen rapid test (ART), or loosely just a rapid test, is a rapid diagnostic test suitable for point-of-care testing that directly detects the presence or absence of an antigen.

  9. 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 ...

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