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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 | Definition, Composition, Functions, & Facts | Britannica

    Dec 15, 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 …

  3. 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.

  4. Facts About Blood - Johns Hopkins Medicine

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

  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 | American Society of Hematology

    Blood editor Dr. Laurie Sehn interviews authors Drs. David-Alexandre Trégouët and Johannes Schetelig on their research published in volume 146 issue 19 of Blood journal.

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

    Giving blood is a simple thing to do, but it can make a big difference in the lives of others. Make a blood donation appointment with the American Red Cross today.

  8. Blood Donation Saves Lives | OneBlood

    Blood donation near you at a donor center or on the Big Red Bus. Give blood or platelets today to help save lives tomorrow.

  9. Blood - MedlinePlus

    May 11, 2023 · The solid part of your blood contains red blood cells, white blood cells, and platelets. Red blood cells (RBC) deliver oxygen from your lungs to your tissues and organs.

  10. Local Blood Drives & Donation Centers Near You | Red Cross

    American Red Cross has blood drives and blood donation centers across the United States. Search for a blood donation location near you.