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Biological materials are frequently constructed of hydratedbiopolymernetworks. Examples include fibrouscollagenin the extracellular matrix andactinwithin the cell's cytoskeleton. There are differences in the molecular composition of the biopolymer subunits as well as differences in the network density and organization. Images can be seenhereandherefor dense collagen networks and for portions of actin networks look at imageshereandhere.
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