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  2. Blood Types Explained - A, B, AB and O | Red Cross Blood Services

    Discover what blood types are compatible with yours. Get our guide to find out. There are four major blood groups determined by the presence or absence of two antigens, A and B, on the …

  3. Blood Types: What They Are and Mean for Your Health - Cleveland Clinic

    Mar 14, 2023 · There are four main blood types: A, B, AB and O. Blood bank specialists determine your blood type based on whether you have antigen A or B on your red blood cells. They also …

  4. Blood type - Wikipedia

    A blood type (also known as a blood group) is based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells (RBCs). These antigens …

  5. Blood Types: Main Groups, Most Common, and Rarest - Verywell …

    Sep 15, 2023 · There are eight blood types, divided into four categories: A, B, AB, and O, and whether Rh positive or negative. These types are determined by antigens on red blood cells. …

  6. Blood Types Explained: Health, Compatibility, and Rare Types - WebMD

    Feb 19, 2025 · Learn what determines your blood type and why it's important. Understand blood type compatibility, donation guidelines, and the need for safe transfusions.

  7. The 8 Blood Types Explained: Importance, Rarity, & Donations

    Dec 26, 2024 · Four main blood types exist: A, B, AB, or O, and everyone has a positive or negative Rh factor. Blood types are important because they affect blood transfusions, …

  8. Blood Types – A, B, AB, O, Rh - Science Notes and Projects

    Nov 28, 2023 · Blood types are a classification of blood based on the presence or absence of specific antigens on the surface of red blood cells. These antigens determine the body’s …

  9. Blood types: What are they and what do they mean? - Medical News Today

    Jan 16, 2024 · Blood types depend on the content of the blood cells and are inherited from parents. There are eight main types. Which type you have affects how you can receive blood.

  10. Different Blood Types Explained: A, B, AB, and O - Health

    Mar 7, 2025 · There are four major blood type groups: A, B, AB, and O. Your blood type is determined by the presence or absence of specific antigens (proteins and sugars)—which act …

  11. Blood Types - Stanford Blood Center

    There are four ABO types: A, B, AB and O. Your blood type is also determined by Rh status: Rh+ or Rh-. That leaves us with eight possible blood types: Each of these eight types is unique. …

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