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 …

View all available appointment times and donation types, then select the one convenient for you. Not sure what donation type is right for you? Learn more about giving whole blood, double red …

In this week's episode of the Blood Podcast, Associate Editor Dr. James Griffin interviews Drs. Binod Dhakal and Ruben Bierings about their respective papers published in this week's issue …

Oct 12, 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 …

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

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 …

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

Sep 20, 2025 · Most people have over a gallon of blood in their body, though it can vary. Learn about blood loss and methods for measuring blood volume.

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.

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.