缺乏胶原蛋白，头发干燥分叉，指甲容易断裂，灰暗无光泽。

Lack of collagen, hair drying bifurcation, nails easily broken, dark dull.

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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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