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  1. Blood - Wikipedia

    Blood is a body fluid in the circulatory system of humans and other vertebrates that delivers necessary substances such as nutrients and oxygen to the cells, and transports metabolic …

  2. Blood | American Society of Hematology

    Both studies challenge existing medical assumptions and suggest new approaches to understanding disease mechanisms and treatment responses. Eli Muchtar; Angela Dispenzieri.

  3. Blood | Definition, Composition, Functions, & Facts | Britannica

    Nov 7, 2025 · Blood is a fluid that transports oxygen and nutrients to cells and carries away carbon dioxide and other waste products. It contains specialized cells that serve particular …

  4. Blood: What It Is & Function - Cleveland Clinic

    Blood is a specialized fluid that constantly flows throughout your body. It’s made of plasma, red blood cells, white blood cells and platelets.

  5. Blood Basics - Hematology.org

    It has four main components: plasma, red blood cells, white blood cells, and platelets. The blood that runs through the veins, arteries, and capillaries is known as whole blood—a mixture of …

  6. Blood - MedlinePlus

    May 11, 2023 · Blood has many functions in your body. Blood tests help doctors check for certain diseases and conditions. Learn about blood types and blood tests.

  7. Donate Blood | Find a Local Blood Drive | American Red Cross

    Find nearby Red Cross blood drives, schedule and manage appointments, complete your RapidPass®, get notified when your blood is on its way to a patient, view results from your …

  8. Facts About Blood - Johns Hopkins Medicine

    Detailed information on blood, including components of blood, functions of blood cells and common blood tests.

  9. Donate Blood, Platelets or Plasma. Give Life | Red Cross Blood

    Am I Eligible to Donate Blood? Are you eligible for blood donation? Find out about the eligibility requirements to donate blood today. Learn about general health, travel, medications, tattoos, …

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

    Not all blood is alike. Learn about blood typing and the rarest and most common types of blood and how they can impact your blood donation.