Jiǎodànbái shì shàngpí xìbāo zhōng de zhōngjiān xiānwéi.
Keratin is the intermediate filament in epithelial cells.
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Cell-biology term. The three filament systems of the cytoskeleton are 微丝 (wēisī, microfilaments), 中间纤维 (intermediate filaments), and 微管 (wēiguǎn, microtubules) — named for their diameters: ~7 nm, ~10 nm, ~25 nm.
