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Complexe ARP → coiffe l'extrémité - et permet la formation de nouveaux filaments (nucléation : permière étape de la formation)- Lomellipode - déformation de la membrane, car elle se fixe sur un filament d'actinie déjà polymérisé qui permet de former un nouveau filament etc ⇒ formation de lomellipodes- Fibres de stress → Faisceaux lâches et contractiles (Alpha-actinine + Myosine)
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