Photograph of a well formed cartilaginous humerus. The primary growth center in the middle of its shaft appears as a light area because of increased intercellular substance. Individual muscles and nerves are apparent. | |
Streeter, G.L. 1949. Developmental Horizons in Human Embryos (fourth issue). A Review of the Histogenesis of Cartilage and Bone. Contributions to Embryology Vol. 33, 149-169. |
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