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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 waste products away …

  2. Blood | American Society of Hematology

    5 days ago · In this Review Series episode, Blood Associate Editor, Dr. Elisabeth Battinelli discusses the Platelet Heterogeneity with authors Drs. Craig Morrell, Larry Frelinger, and Leo Nicolai. Find the full …

  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. 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 about 55% …

  5. 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 functions. These …

  6. Facts About Blood - Johns Hopkins Medicine

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

  7. Blood: Components, functions, groups, and disorders

    Jan 16, 2024 · Blood circulates throughout the body, transporting substances essential to life. Here, learn about the components of blood and how it supports human health.

  8. 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.

  9. Blood- Components, Formation, Functions, Circulation

    Aug 3, 2023 · Blood is a liquid connective tissue made up of blood cells and plasma that circulate inside the blood vessels under the pumping action of the heart.

  10. Overview of Blood

    The body contains about 5 to 6 quarts (about 5 liters) 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 …