Collagen is one major structural protein in the extracellular matrix and also one primarycomponent of knot tissues.
胶原蛋白,简称胶原,是细胞外基质的主要结构蛋白,是结缔组织的主要成份之一。
2
A substantial component of architectural rationalism is the rationality of structure. The issue of structural correctness has also been one of the architects' primary concerns in the Modern Era.