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bone marrow

bone marrow
Image credit: Schneider Children's Hospital
Bone marrow is the soft, fatty, vascular tissue that fills the cavities in large bones and and contains hematopoietic stem cells, from which develop erythrocytes (red blood cells), many leukocytes (white blood cells), and platelets.

The bone marrow also contains mesenchymal stem cells that a number of cell types come from, including chondrocytes, which produce cartilage.

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