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  2. Heparin-induced thrombocytopenia - Wikipedia

    en.wikipedia.org/wiki/Heparin-induced...

    Up to 8% of patients receiving heparin are at risk to develop HIT antibodies, but only 1–5% on heparin will progress to develop HIT with thrombocytopenia and subsequently one-third of them may develop arterial or venous thrombosis. [1] After vascular surgery, 34% of patients receiving heparin developed HIT antibodies without clinical symptoms ...

  3. Blood compatibility testing - Wikipedia

    en.wikipedia.org/wiki/Blood_compatibility_testing

    The discrepancy can be resolved by testing the person's red blood cells with an anti-A 1 reagent, which will give a negative result if the patient belongs to the A 2 subgroup. Anti-A 1 antibodies are considered clinically insignificant unless they react at 37 °C (99 °F). Other subgroups of A exist, as well as subgroups of B, but they are ...

  4. Anti-histone antibodies - Wikipedia

    en.wikipedia.org/wiki/Anti-histone_antibodies

    Anti-histone antibodies are autoantibodies that are a subset of the anti-nuclear antibody family, which specifically target histone protein subunits or histone complexes. [1] They were first reported by Henry Kunkel , H.R. Holman, and H.R.G. Dreicher in their studies of cellular causes of lupus erythematosus in 1959–60.

  5. Panel-reactive antibody - Wikipedia

    en.wikipedia.org/wiki/Panel-reactive_antibody

    A panel-reactive antibody (PRA) is a group of antibodies in a test serum that are reactive against any of several known specific antigens in a panel of test leukocytes or purified HLA antigens from cells. It is an immunologic metric routinely performed by clinical laboratories on the blood of people awaiting organ transplantation. [1]

  6. Complementarity-determining region - Wikipedia

    en.wikipedia.org/wiki/Complementarity...

    A single antibody molecule has two antigen receptors and therefore contains twelve CDRs total. There are three CDR loops per variable domain in antibodies. Sixty CDRs can be found on a pentameric IgM molecule, which is composed of five antibodies and has increased avidity as a result of the collective affinity of all antigen-binding sites combined.

  7. Histone deacetylase - Wikipedia

    en.wikipedia.org/wiki/Histone_deacetylase

    Histone deacetylases (EC 3.5.1.98, HDAC) are a class of enzymes that remove acetyl groups (O=C-CH 3) from an ε-N-acetyl lysine amino acid on both histone and non-histone proteins. [2] HDACs allow histones to wrap the DNA more tightly. [ 3 ]

  8. Immunoperoxidase - Wikipedia

    en.wikipedia.org/wiki/Immunoperoxidase

    The most common example of this is a biotin linked primary antibody that binds to an enzyme-bound streptavidin. This method can be used to amplify the signal. Example 3. An untagged primary antibody is detected using a general secondary antibody that recognises all antibodies originating from same animal species as the primary. The secondary ...

  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 ...