一、什么叫分化和化生?答:分化是指组织细胞在发育成熟过程中所获得的形态结构和功能代谢等方面的特征。细胞分化越高,其形态结构和功能代谢越接近正常成熟细胞,分化越低,越不象正常成熟细胞。肿瘤细胞分化越高,其恶性程度越低,分化越低,恶性程度越高。 1. What is differentiation and metaplasia? A: Differentiation refers to the characteristics of the morphological structure and functional metabolism obtained during the development of tissue cells. The higher the cell differentiation, the closer its morphological structure and functional metabolism are to normal mature cells. The lower the differentiation, the less the normal mature cells. The higher the differentiation of tumor cells, the lower the degree of malignancy, the lower the differentiation, and the higher the degree of malignancy.