DON W. FAWCETT / SCIENCE PHOTO LIBRARY DON W. FAWCETT / SCIENCE PHOTO LIBRARY
Color enhanced transmission electron micrograph of a quick-frozen, deeply-etched preparation of skeletal muscle fiber and extracellular components. The upper right portion of the image is dominated by protein myofilaments. The basal lamina are the fine mesh structures on the outer edge of the cell membrane. The larger fibrils are collagen.
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