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Related Concept Videos

Blood Flow01:29

Blood Flow

75.8K
Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow.
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Composition of Blood01:22

Composition of Blood

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The blood in our bodies comprises three major components: blood plasma, formed elements, and the extracellular matrix. Blood plasma is a yellowish fluid that constitutes 55% of the total blood volume. It is primarily made up of water and essential substances such as electrolytes and proteins. Blood plasma serves as a medium for transporting blood cells and also contains nutrients, enzymes, hormones, antibodies, and gases.
Formed elements constitute the remaining 45% of the blood volume. These...
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Blood Types02:20

Blood Types

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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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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.
Antigens in the ABO Blood Group System
Antigens are substances that can trigger an immune response, leading to the production of antibodies. In the ABO blood group system,...
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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 Typing01:10

Blood Typing

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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.
Antigens are protein molecules that reside on the surface of red blood cells (RBCs). The ABO and Rh blood typing systems target...
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Updated: Jan 27, 2026

Ex Situ Normothermic Machine Perfusion of Donor Livers
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Ex Situ Normothermic Machine Perfusion of Donor Livers

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[The blood donor].

Bruno Danic1, Julien Robinet1

  • 1Établissement français du sang, Rennes, France.

La Revue Du Praticien
|March 15, 2019
PubMed
Summary

In France, 1.6 million people donate blood annually, yielding 3 million donations. This vital act supports the production of essential blood products and medicines, requiring ethical and medical oversight for safety.

Area of Science:

  • Transfusion Medicine
  • Biotechnology
  • Public Health

Background:

  • Voluntary blood donation is a cornerstone of healthcare in France.
  • Annually, 1.6 million individuals contribute over 3 million blood donations.
  • These donations are crucial for producing both labile blood products and plasma-derived medicinal products.

Purpose of the Study:

  • To review the ethical and medical considerations of blood donation in France.
  • To highlight the importance of regulating blood donation for donor and recipient safety.
  • To provide an overview of the French blood supply chain and its products.

Main Methods:

  • Literature review of ethical and medical aspects of blood donation.
  • Analysis of French blood donation statistics and product manufacturing.
Keywords:
blood donationblood donortransfusion

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  • Examination of regulatory frameworks for blood transfusion services.

    • Main Results:

    • France benefits from a large base of voluntary blood donors.
    • Donations support the production of red blood cell concentrates, platelets, plasma, immunoglobulins, albumin, and clotting factors.
    • Ensuring the safety of donors and recipients necessitates robust ethical and medical regulations.

    Conclusions:

    • Voluntary blood donation is a critical humanitarian act in France with significant medical and societal impact.
    • Effective regulation is paramount to maintain the safety and efficacy of blood products.
    • Continued ethical and medical scrutiny is essential for the sustainability of blood donation programs.