7 nm läbimõõduga tsütoskeleti filamendid, mille põhikomponendiks on aktiin, Microfilaments, also called actin filaments, are filamentous structures in the cytoplasm of eukaryotic cells and form part of the cytoskeleton. They are primarily composed of polymers of actin, but in cells are modified by and interact with numerous other proteins. Microfilaments are usually about 7 nm in diameter and composed of two strands of actin., Филаменты цитоскелета диаметром 7нм, основным компонентом которых является актин.