THOMAS DEERINCK, NCMIR / SCIENCE PHOTO LIBRARY THOMAS DEERINCK, NCMIR / SCIENCE PHOTO LIBRARY
Microtubules. Transmission electron micrograph (TEM) of purified microtubules. Microtubules are polymers of the protein tubulin. They are a component of the cytoskeleton, which maintains a cell's shape, allows some cellular mobility and is involved in intracellular transport. Magnification: x45000 when printed 10 centimetres wide.
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