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  1. Blood Basics - Hematology.org

    Blood Basics Blood is a specialized body fluid. 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 …

  2. Blood | American Society of Hematology

    6 days ago · In this week's episode, Blood editor Dr. James Griffin interviews authors Drs. Vincent Muczynski and Mark Geyer on their latest research published in Blood. Dr. Muczynski's research …

  3. 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 functions. These …

  4. Facts About Blood - Johns Hopkins Medicine

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

  5. Overview of Blood - Visible Body

    Blood is made up of 55% plasma and 45% formed elements—red blood cells, white blood cells, and platelets. Blood is fluid connective tissue that circulates throughout the body.

  6. Overview of Blood

    Blood performs various essential functions as it circulates through the body: Once blood is pumped out of the heart, it takes 20 to 30 seconds to make a complete trip through the circulation and return to …

  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. 18.1 An Overview of Blood - Anatomy and Physiology 2e | OpenStax

    Albumin is also the most significant contributor to the osmotic pressure of blood; that is, its presence holds water inside the blood vessels and draws water from the tissues, across blood vessel walls, …

  10. Blood: Composition, components and function | Kenhub

    Oct 30, 2023 · Blood is the most important transport medium in the human body. It transports gases (oxygen, carbon dioxide, nitrogen etc.) as well as nutrients (metabolism) and end products of cell …