As a means, the centrifuge has many advantages. For example, ultracentrifugation can be operated at low temperatures, protecting the activity of biological macromolecules. The load of the preparative centrifuge is large, and a few grams of sample can be separated and purified at a time, which is much larger than the sample on chromatography and electrophoresis. The analysis centrifuge can not only measure the molecular weight of the substance, but also check the purity, conformation and sedimentation coefficient of the substance. Therefore, centrifugal technology occupies an important position in biological research and is the most convenient and effective tool for separating and purifying cells, viruses, proteins, nucleic acids, and enzymes.
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