False-colour scanning electron micrograph of a cross-section of normal human compact bone tissue, as found in the shafts of the long bones such as the femur. The rings correspond to concentric bands of calcified material called lamellae. They are centered around an Haversian canal, a channel for the blood & lymph vessels and the nerves, which runs the entire length of the bone. Each canal and its surrounding lamellae form an Haversian system, a number of which have been highlighted here for clarity. Magnification: x110 at 6x7cm size.
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