在对细胞核及其组成成分和外来化合物引起DNA分子断裂的研究时,需要分离制备细胞核。用Fasfur和Nicotera法分离细胞核需用超速和高速离心机,在一股实验室缺少这种条件。目前较长用的柠檬酸法又不适于研究核内的某些酶活性。为此,我们在上述三种方法的基础上, In the nuclear and its components and foreign compounds cause DNA molecular breakage research, the need to separate the preparation of the nucleus. Isolation of nuclei using the Fasfur and Nicotera methods requires a speeding and high speed centrifuge, which is absent in a laboratory. The longer citric acid method is not suitable for studying some of the nuclear activity of the enzyme. For this reason, on the basis of the above three methods,