All cellular components of the blood came from hematopoietic stem cells (HSCs) located in the marrow. The HSCs have the ability to give rise to all of the different mature blood cell types, such as erythrocytes, T cells, B cells, granulocytes, megakaryocytes, macrophages.
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... soft, spongy tissue found in the centre of most large bones that produces the cellular components of blood: white cells, red cells and platelets (haemopoiesis). It is also the most radiation sensitive tissue of the body. The fatty network of connective tissue that fills the cavities of bones. ...
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