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noun, plural: microfilaments

A thin, helical, single-stranded filament of the cytoskeleton found in the cytoplasm of eukaryotic cells, composed of actin subunits, and functions primarily in maintaining the structural integrity of a cell and cell movements.


Additionally, the microfilament:

Word origin: Gk: comb. form repr. mīkrós, small + NL fīlāmentum, equiv. to LL fīlā(re), to wind thread, spin.

Related forms: microfilamentous (adjective).