AMI IMAGES / SCIENCE PHOTO LIBRARY AMI IMAGES / SCIENCE PHOTO LIBRARY
Lung collagen. Transmission electron micrograph (TEM) of a section through collagen fibres (dark) from connective tissue of the lung. Collagen is a protein with a high tensile strength, providing structure and elasticity to body tissues such as muscles, skin, tendons and bones. It is the most abundant protein in the body.
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