Blood Group Antibodies
Blood Group Antibodies - Related Videos
11:27
Prediction of Red Blood Cell Antibody Significance Using the Monocyte-Macrophage Assay
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2025
We have developed enhancements and updated methods for the existing monocyte-monolayer assay (MMA), in which macrophages are used to help better predict the clinical relevance of red cell alloantibodies in transfusion medicine and immunology. This assay is named the monocyte-macrophage assay (M-MA).
06:29
Methods for Quantitative Detection of Antibody-induced Complement Activation on Red Blood Cells
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Cited by 14 •
2014
Here we describe two assays for measuring complement activation induced by antibodies against red blood cells. The major advantage over the current assays is their quantitative and easy-to-interpret nature.
08:17
A Semi-automated Approach to Preparing Antibody Cocktails for Immunophenotypic Analysis of Human Peripheral Blood
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Cited by 9 •
2016
Whole blood Immunophenotyping is indispensable for monitoring the human immune system. However, the number of reagents required and the instability of specific fluorochromes in premixed cocktails necessitates daily reagent preparation. Here we show that semi-automated preparation of staining antibody cocktail helps establish reliable immunophenotyping by minimizing variability in reagent dispensing.
13:21
Antibody Generation: Producing Monoclonal Antibodies Using Hybridomas
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2023
Source: Frances V. Sjaastad1,2, Whitney Swanson2,3, and Thomas S. Griffith1,2,3,4 1 Microbiology, Immunology, and Cancer Biology Graduate Program, University of Minnesota, Minneapolis, MN 55455 2 Center for Immunology, University of Minnesota, Minneapolis, MN 55455 3 Department of Urology, University of Minnesota, Minneapolis, MN 55455 4 Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455 Polyclonal antibodies are defined as a collection of antibodies directed against...
08:26
The Isolation, Differentiation, and Quantification of Human Antibody-secreting B Cells from Blood: ELISpot as a Functional Readout of Humoral Immunity
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Cited by 10 •
2016
Human peripheral blood is commonly used for the assessment of the humoral immune response. Here, the methods for isolating human B cells from peripheral blood, differentiating human B cells into antibody (Ab)-secreting B cells (ASCs) in culture, and enumerating the total IgM- and IgG-ASCs via an ELISpot assay are described.
FAQs
Specificity allows an antibody to bind selectively to a matching antigen on a red-cell surface rather than reacting with every cell. When target antigens are present, binding can produce visible red-cell agglutination or activate complement, a process that can promote destruction of the affected cells. This selective recognition is the basis for interpreting blood-group test reactions.
Antibody binding may result in agglutination, in which red cells become visibly clumped, or complement-mediated destruction, in which an immune process damages the targeted cells. These are different consequences of antigen recognition and provide distinct laboratory or clinical indications that an antibody has reacted with red cells carrying the corresponding antigen.
Some antibodies develop after exposure to foreign red-cell antigens, whereas others are present naturally in particular blood-group systems. This distinction matters because compatibility assessment must consider both known blood-group characteristics and antibodies that may have formed through prior exposure. Detecting either type helps identify reactions that could make a donor–recipient pairing unsafe.
Unexpected antibody identification looks beyond the basic blood-group result to determine whether additional antibodies react with particular red-cell antigens. Laboratory detection of these antibody–antigen reactions gives compatibility testing greater specificity and helps assess whether donor cells may be targeted. The resulting information supports safer selection of blood for transfusion.
Laboratory evaluation focuses on detecting antibody–antigen reactions involving red cells. These reactions can be used to determine blood type, identify unexpected antibodies, and assess donor–recipient compatibility. The observed pattern of reactivity connects the immune protein with its target antigen, allowing testing to distinguish routine blood-group information from findings that require additional compatibility consideration.
Investigation is especially relevant when transfusion safety, a suspected hemolytic reaction, or maternal–fetal incompatibility is being evaluated. Testing can reveal whether antibodies recognize red-cell antigens associated with the donor, recipient, or pregnancy context. The findings help explain immune-mediated red-cell destruction and provide evidence for assessing compatibility in these biologically important situations.