上皮下为疏松结缔组织，结缔组织的主要成分为胶原纤维。
Under the epithelia is loose connective tissue whose chief elements are collagen fibers.
胶原纤维酸钠是以天然食品成分为原料，经复配、过滤、精制干燥而成的食品添加剂。
Sodium collagen fibers is a food additive, uses natural food ingredients as raw materials, made by compounding, filtration, purification and drying.
弹性纤维在结构和化学成分上异于胶原纤维。
Elastic fibers differ both structurally and chemically from collagen.
密质骨骨基质的主要成分胶原纤维和骨盐仍维持原有形态及结构特征，胶原纤维聚集、排列成规则的网状支架。
The main composition of extracellular matrix of compact bone, collagen fibrils and minerals, were preserved in the natural position and structure characteristic.
培养细胞能合成分泌胶原纤维。
The cells retained the ability to produce and synthesize collagen.
培养细胞能合成分泌胶原纤维。
The cells retained the ability to produce and synthesize collagen.
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