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Related Concept Videos

Rh Blood Group01:19

Rh Blood Group

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The Rhesus (Rh) antigen is crucial in determining blood groups and ensuring compatibility during blood transfusions.
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Blood Types02:20

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Human blood is classified into different types based on the presence of antigens on the red blood cell's surface and antibodies in the plasma. Proper identification of blood type is essential for successful blood transfusion. The International Society of Blood Transfusion has identified 38 human blood types based on the surface antigens on the red blood cells. The most common types are ABO, Rh, and MNS blood types.
ABO blood group
ABO antigens are glycoproteins encoded by genes present on...
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Blood Typing01:10

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Understanding an individual's blood group is a critical component of transfusion medicine. It ensures compatibility in blood transfusions, organ transplants, and even during pregnancy. Determining these blood groups involves the ABO and Rh blood typing systems, utilizing specific antigens and corresponding anti-sera to identify an individual's blood type.
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The ABO Blood Group01:12

The ABO Blood Group

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The ABO blood group system is a critical element of transfusion medicine, essential for determining blood compatibility in transfusions and organ transplants. It is based on specific antigens, or agglutinogens, present on the surface of red blood cells (RBCs) and corresponding antibodies, or agglutinins, in the blood plasma.
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Blood Transfusion and Agglutination02:45

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Blood transfusion is a therapeutic measure to restore the blood volume after extensive blood loss due to an accident or a medical procedure. Blood transfusion involves drawing a certain amount of blood from a suitable donor and infusing it into the recipient.
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Blood Transfusion01:15

Blood Transfusion

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Blood transfusion is a critical medical procedure that saves lives and treats various medical conditions. It involves transferring blood from a donor to a recipient. This process requires a thorough understanding of the ABO blood group system and its associated antigens and antibodies.
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Updated: Sep 16, 2025

Antigens Protected Functional Red Blood Cells By The Membrane Grafting Of Compact Hyperbranched Polyglycerols
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The Rh blood group system: RHD update.

Glenn Ramsey1

  • 1Department of Pathology, Feinberg School of Medicine, Northwestern University, and Blood Bank, Northwestern Memorial Hospital, Chicago, IL.

Immunohematology
|July 9, 2025
PubMed
Summary
This summary is machine-generated.

This review updates knowledge on the Rh blood group system, focusing on RHD, RhD variations, and anti-D alloimmunization. It covers RHD genotyping applications and managing anti-D in pregnancy.

Keywords:
Rh blood group systemRhDblood group antigenhemolytic disease of the fetus and newborn

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Area of Science:

  • Immunohematology
  • Genetics
  • Transfusion Medicine

Background:

  • The Rh blood group system is crucial in transfusion medicine and pregnancy.
  • Previous reviews provide foundational knowledge, necessitating updated information.

Purpose of the Study:

  • To provide a comprehensive update on the RhD blood group system.
  • To detail advances in understanding RhD structure, D antigen expression, and alloimmunization.
  • To highlight the clinical applications of RHD genotyping.

Main Methods:

  • Review of current literature and research findings on the RhD system.
  • Analysis of RHD genotyping techniques and their clinical utility.
  • Synthesis of information on anti-D alloimmunization and its management.

Main Results:

  • Detailed exploration of RHD gene structure and variations affecting D antigen expression.
  • Identification of RHD genotypes associated with weak D and partial D phenotypes.
  • Discussion of strategies for preventing and managing anti-D alloimmunization in pregnant individuals.

Conclusions:

  • RHD genotyping offers valuable tools for characterizing weak and partial D phenotypes.
  • Effective management of anti-D alloimmunization is critical for preventing hemolytic disease of the fetus and newborn.
  • This update provides essential information for clinicians and researchers in immunohematology.