胶原蛋白形成网状的纤维，是一个重要贡献的结构和纹理的皮肤。

Collagen forms a meshwork of fibres and is a key contributor to the structure and texture of skin.

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血纤维蛋白和血小板一起形成血栓。血友病就是因为遗传上缺乏一种凝血胶原引起的。

Fibrin and platelets combine to form a clot. Hemophilia is caused by a hereditary lack of one of the clotting factors.

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炎症可导致疤痕形成，图示持续数十年的自身免疫病导致的管壁变厚，粉红色的胶原纤维增生。

The end result of inflammation can be scarring. Here, the alveolar walls are thickened and filled with pink collagen following an autoimmune disease lasting for decades.

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