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迄今人们对于血浆中大量的蛋白组分如白蛋白和丙种球蛋白等生理功能的了解已逐渐清楚,但是对于一些微量蛋白成分的生理功能尚缺乏深入的了解.近年来,人们又从血浆中分离出一些微量成分的蛋白,其中大部分已制得纯品并考查了它们的物理和化学性质,有一些已用来制备特异性抗血清并间接地用于临床,有些则在临床试用观察如血清胆碱脂酶,α_2-巨球蛋白和转铁蛋白等。其中对转铁蛋白了解得较多。
Up to now, the understanding of the physiological functions of a large number of plasma protein components, such as albumin and gamma globulin, has become clear, however, there is a lack of understanding of the physiological functions of some trace proteins. In recent years, Some minor components of the protein, most of which have been made pure and examined their physical and chemical properties, some have been used to prepare specific antisera and indirectly for clinical use, while others in clinical trials such as serum Cholinesterase, alpha-2-macroglobulin and transferrin. Which transferrin know more.