False-colour scanning electron micrograph (SEM) of human hyaline cartilage from the walls of a bronchus, the main conducting airway of a lung. Hyaline cartilage is found in the walls of conducting airways (the trachea & bronchi) and a specialized type of hyaline cartilage caps the ends of long bones that form joints with other bones. This articular cartilage has a smooth slippery surface which combines with the synovial fluid to ease movement in the joint. This image shows the organization of chondrocytes (cartilage cells) which are embedded in a cartilage matrix that the cells have synthesized. Magnification: x220 at 35mm size.

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