Blood cell

A blood cell is any cell of any type normally found in blood. In mammals, these fall into three general categories:

• Red blood cell, whose main purpose is the transport of oxygen;
• White blood cell, which produces antibodies to fight infection;
• Platelet, which is actually a fragment of the large bone marrow cells known as megakaryocytes and are important in blood clotting.

External links

• What is Blood? from the Genetic Science Learning Center at the University of Utah.
• Cells of the blood