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Linear viscoelasticity of cross-linked F-actin networks. Elastic moduli G′ (solid) and viscous moduli G″ (open). Filamin cross-linked networks are soft, viscoelastic solids that become stiffer with increasing RF or L: (A) L = 15 μm with various RF and (C) RF = 0.01 with various L (in μm). Rigidly cross-linked networks become stiffer with increasing L and significantly stiffer and more solidlike with increasing RB: (B) L = 15 μm with various RB, and (D) RB = 0.01 with various L.
