We have updated our Online Services Terms of Use and Privacy Policy. See our Cookies Notice for information concerning our use of cookies and similar technologies. By using this website or clicking “I ACCEPT”, you consent to our Online Services Terms of Use.

Blood is the life-maintaining fluid that circulates through the body's heart, arteries, veins, and capillaries. Click on the links above to learn more about this topic.

Picture of vials of blood, labeled

 

Topic Index

Facts About Blood

Blood Donations / Blood Banking

Blood Transfusions

Bone Marrow Transplantation

Blood Disorders