研究发现，细胞遗传学改变、癌基因、抑癌基因、黏附分子及细胞外基质蛋白在涎腺多形性腺瘤的恶变过程中均有一定的作用。

The recent studies demonstrate that cytogenetic alterations, oncogenes, tumor suppressor genes, adhesion molecules and extracellular matrix proteins may play important roles in the process.

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比较基因组杂交技术用于分析染色体dna水平的改变，能获得良好结果并具有可重复性，从而提供了一条肿瘤细胞遗传学研究的可行路径。

CGH are applied to analyze DNA level changes of chromosome, can get good results and can be repeated well, it is an advisable way of tumor cellular genetic research.

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目的了解核工业放射性工作人员的健康情况，探求辐射危害所致的细胞遗传学主要改变指标的类型。

Objective to understand the health status of the radial-stricken workers in nuclear industry and to explore the types of main mutative indices in cytogenetics caused by radiation risk.

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