Leukemia

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Bone Marrow & Blood Formation


Bones are not solid, but are made up of two distinct regions. The outer, weight-bearing area is hard, compact, and calcium-based. It surrounds a lattice-work of fibrous bone known as cancellous tissue.The inner region, or marrow, which is one of the largest organs of the body, is located within the bones. It fills the shafts of the long bones, the trabeculae (spaces within cancellous tissue), and extends into the bony canals that hold the blood vessels.


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