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Microfilaments are solid rods about 7nm in diameter. They are also called actin filaments, because they are built from molecules called actin (a globular protein). A microfilament is a twisted double chain of actin subunits. Microfilaments are present in all eukaryotic cells. The structural role of microfilaments in the cytoskeleton is to bear tension (pulling forces). They help support/form the cells shape.

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16y ago

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