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Mammalian bone, SEM

Mammalian bone, SEM

C036/9629

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Credit

DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY

Caption

Coloured scanning electron micrograph of a mammalian leg bone fractured near the bone marrow cavity. The bone marrow consists of packed hemopoietic cells, reticular cells and adipocytes (fat cells). They occupy all the extravascular spaces around an extensive system of channels called venous sinuses. Blood cells develop outside of the extravascular system and must pass through the walls of the sinuses to enter the circulation system. The common stem cells developing in the bone marrow differentiate along various lines to form red and white blood cells (granular leukocytes or monocytes). Active or red marrow is dominated by the production of red blood cells. With increasing age the marrow becomes less active and is progressively inhabited by adipocytes. Magnification: x220 when shortest axis printed at 25 millimetres.

Release details

Model release not required. Property release not required.

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