Universal Recipient
Universal Recipient - Related Videos
12:52
Conjugation: A Method to Transfer Ampicillin Resistance from Donor to Recipient E. coli
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2023
Source: Alexander S. Gold1, Tonya M. Colpitts1 1 Department of Microbiology, Boston University School of Medicine, National Emerging Infections Diseases Laboratories, Boston, MA First discovered by Lederberg and Tatum in 1946, conjugation is a form of horizontal gene transfer between bacteria that relies on direct physical contact between two bacterial cells (1). Unlike other forms of gene transfer, such as transformation or transduction, conjugation is a naturally occurring process in which...
07:32
Newton's Law of Universal Gravitation
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2023
Source: Ketron Mitchell-Wynne, PhD, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA Legend states that Isaac Newton saw an apple fall from a tree. He noticed the acceleration of the apple and deduced that there must have been a force acting upon the apple. He then surmised that if gravity can act at the top of the tree, it can also act at even larger distances. He observed the motion of the moon and the orbits of the...
11:21
Phage Transduction: A Method to Transfer Ampicillin Resistance from Donor to Recipient E. coli
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2023
Source: Alexander S. Gold1, Tonya M. Colpitts1 1 Department of Microbiology, Boston University School of Medicine, National Emerging Infections Diseases Laboratories, Boston, MA Transduction is a form of genetic exchange between bacteria that utilizes bacteriophages, or phages, a class of virus that infects exclusively prokaryotic organisms. This form of DNA transfer, from one bacterium to another by way of a phage, was discovered in 1951 by Norton Zinder and Joshua Ledererg, who termed the...
03:15
A Peptide Array-Based Detection of Anti-donor HLA Alloantibodies in Organ Recipients
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2025
This video demonstrates an assay to detect anti-donor HLA alloantibodies in organ recipients. A peptide array is synthesized to represent potential epitopes for antibody-mediated organ rejection. The array is incubated with the recipient's serum, containing alloantibodies that bind to their target epitopes. Antibody binding is detected using chemiluminescence to identify donor-specific HLA epitopes that incite alloantibody reactivity.
04:05
Subcutaneous Transplantation Assay: A Method to Transplant Melanoma Cells from a Donor to a Recipient Zebrafish Model
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2023
This video describes the method for transplantation of tumor cells from the melanoma-bearing donor zebrafish model to an immunocompromised recipient Casper zebrafish. It helps to visualize tumor engraftment and proliferation in the recipient fish.
FAQs
Compatibility depends on interactions between antigens on transfused red cells and antibodies in the recipient’s plasma. A person with AB blood has both A and B antigens, so their plasma lacks antibodies directed against either of those markers. This reduces the likelihood that incoming ABO antigens will trigger antibody-mediated agglutination, the clumping process that can complicate transfusion.
Anti-A and anti-B antibodies can recognize the corresponding antigen on red blood cells and promote agglutination. In an AB recipient, neither antibody is present in the plasma, so red cells carrying A, B, or both antigens are less likely to be targeted through the ABO system. This antibody pattern explains the compatibility principle behind the designation.
The ABO pattern alone does not describe Rh compatibility. For red-cell transfusion, an AB-positive recipient can receive cells that are either Rh-positive or Rh-negative, extending compatibility beyond the ABO groups. This broader designation still concerns the Rh and ABO features described here; it does not remove the need to assess other clinically important incompatibilities.
Blood typing and crossmatching remain important even when the recipient has the broad ABO and Rh compatibility associated with AB-positive blood. Typing identifies the relevant blood-group characteristics, while crossmatching helps evaluate compatibility between the recipient and the proposed red-cell supply. These checks support safer decisions by looking beyond the simplified universal-recipient label.
In an emergency, the designation can help inform an initial decision about which red-cell blood groups may be considered for an AB-positive recipient. It is a compatibility aid rather than a substitute for laboratory evaluation. As circumstances allow, blood typing and crossmatching should still be used to identify incompatibilities that the ABO and Rh description does not capture.
The term summarizes compatibility within the ABO system and, for AB-positive recipients, the Rh-positive or Rh-negative options for red cells. It does not account for every clinically important incompatibility. Consequently, a person may qualify as a universal recipient in this limited sense while still requiring laboratory typing and crossmatching before transfusion decisions are finalized.