Microtubules are long, hollow protein filaments that form part of the cytoskeleton in eukaryotic cells, helping shape cells, organize components, and enable intracellular transport and division. They’re composed of tubulin subunits arranged in a helical lattice, and they dynamically polymerize and depolymerize in response to cellular needs. This term is used in molecular biology, cell biology, and related research contexts.
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