Soft tissue consists a main body of biological systems. It is made of hydrogels mainly composed of extra cellular matrix (ECM), which is the three-dimensional highly organized and inter-woven network of proteins and polysaccharides. ECM has three symbolic roles. They are pertinent and excellent mechanical performance, extremely low friction, and effective and selective transportation of solute molecules for cell viability. One of the important goals for gel science would be to design and create hydrogels with critical parameters, which natural tissues possess and eventually to replace them with artificial one.

中文翻译：

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聚合物凝胶作为人造软组织

软组织是生物系统的主体。它由主要由细胞外基质（ECM）组成的水凝胶制成，细胞外基质是三维高度组织化的蛋白质和多糖交织网络。ECM具有三个象征性角色。它们具有相关性和出色的机械性能，极低的摩擦力以及溶质分子的有效和选择性转运，可提高细胞活力。凝胶科学的重要目标之一是设计和制造具有关键参数的水凝胶，而天然组织拥有这些关键参数，并最终将其替换为人工组织。